Roger Federer

One of the greatest tennis players of all time will represent Switzerland at the London Games.

FILE PHOTO: Mar 11, 2018; Indian Wells, CA, USA; Federico Delbonis (ARG) during his second round match against Roger Federer (not pictured) in the BNP Paribas Open at the Indian Wells Tennis Garden. Mandatory Credit: Jayne Kamin-Oncea-USA TODAY Sports
Tennis: BNP Paribas Open-Day 7
FILE PHOTO: Mar 11, 2018; Indian Wells, CA, USA; Federico Delbonis (ARG) during his second round match against Roger Federer (not pictured) in the BNP Paribas Open at the Indian Wells Tennis Garden. Mandatory Credit: Jayne Kamin-Oncea-USA TODAY Sports
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer in action during the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer in action during the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer in action during the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer in action during the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su
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Switzerland's Roger Federer and Bjorn Borg (R) of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Federer and Borg of Sweden pose after a tennis session to promote the Laver Cup in Geneva
Switzerland's Roger Federer and Bjorn Borg (R) of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8,2019. REUTERS/Arnd Wiegmann
Switzerland's Federer returns the ball to Borg of Sweden during a tennis session on the banks of Lake Geneva in Geneva
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8,2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Federer returns the ball to Bjorn Borg of Sweden during a tennis session on the banks of Lake Geneva in Geneva
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Bjorn Borg of Sweden returns the ball to Switzerland's Roger Federer (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Borg of Sweden returns the ball to Switzerland's Federer during a tennis session on a temporary court on the banks of Lake Geneva in Geneva
Bjorn Borg of Sweden returns the ball to Switzerland's Roger Federer (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer sits beside as Bjorn Borg of Sweden (R) addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Federer sits beside as Borg of Sweden addresses a news conference to promote the Laver Cup tennis tournament in Geneva
Switzerland's Roger Federer sits beside as Bjorn Borg of Sweden (R) addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Bjorn Borg of Sweden (R) sits beside as Switzerland's Roger Federer addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Borg of Sweden sits beside as Switzerland's Federer addresses a news conference to promote the Laver Cup tennis tournament in Geneva
Bjorn Borg of Sweden (R) sits beside as Switzerland's Roger Federer addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
REFILE - ADDING DROPPED LETTER Bjorn Borg and Roger Federer sit aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Bjorn Borg and Roger Federer sit aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva
REFILE - ADDING DROPPED LETTER Bjorn Borg and Roger Federer sit aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer and Bjorn Borg of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Federer and Borg of Sweden pose after a tennis session to promote the Laver Cup in Geneva
Switzerland's Roger Federer and Bjorn Borg of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer sits beside as Bjorn Borg of Sweden (R) addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Federer sits beside as Borg of Sweden addresses a news conference to promote the Laver Cup tennis tournament in Geneva
Switzerland's Roger Federer sits beside as Bjorn Borg of Sweden (R) addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer serves a ball from a boat in front of the Jet d'Eau water fountain during a promotion event for the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer serves a ball from a boat in front of the Jet d'Eau water fountain during a promotion event for the Laver Cup tennis tournament in Geneva
Switzerland's Roger Federer serves a ball from a boat in front of the Jet d'Eau water fountain during a promotion event for the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Federer returns the ball to Bjorn Borg of Sweden during a tennis session on the banks of Lake Geneva in Geneva
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer and Bjorn Borg (R) of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Federer and Borg of Sweden pose after a tennis session to promote the Laver Cup in Geneva
Switzerland's Roger Federer and Bjorn Borg (R) of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer and Bjorn Borg (R) of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8,2019. REUTERS/Arnd Wiegmann
Switzerland's Federer and Borg of Sweden pose after a tennis session to promote the Laver Cup in Geneva
Switzerland's Roger Federer and Bjorn Borg (R) of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8,2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer serves a ball from a boat in front of the Jet d'Eau water fountain during a promotion event for the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer serves a ball from a boat in front of the Jet d'Eau water fountain during a promotion event for the Laver Cup tennis tournament in Geneva
Switzerland's Roger Federer serves a ball from a boat in front of the Jet d'Eau water fountain during a promotion event for the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer sits beside as Bjorn Borg of Sweden (R) addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Federer sits beside as Borg of Sweden addresses a news conference to promote the Laver Cup tennis tournament in Geneva
Switzerland's Roger Federer sits beside as Bjorn Borg of Sweden (R) addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer serves a ball from a boat in front of the Jet d'Eau water fountain during a promotion event for the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer serves a ball from a boat in front of the Jet d'Eau water fountain during a promotion event for the Laver Cup tennis tournament in Geneva
Switzerland's Roger Federer serves a ball from a boat in front of the Jet d'Eau water fountain during a promotion event for the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Federer returns the ball to Bjorn Borg of Sweden during a tennis session on the banks of Lake Geneva in Geneva
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Bjorn Borg of Sweden returns the ball to Switzerland's Roger Federer (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Borg of Sweden returns the ball to Switzerland's Federer during a tennis session on a temporary court on the banks of Lake Geneva in Geneva
Bjorn Borg of Sweden returns the ball to Switzerland's Roger Federer (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Bjorn Borg of Sweden (R) sits beside as Switzerland's Roger Federer addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Borg of Sweden sits beside as Switzerland's Federer addresses a news conference to promote the Laver Cup tennis tournament in Geneva
Bjorn Borg of Sweden (R) sits beside as Switzerland's Roger Federer addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8,2019. REUTERS/Arnd Wiegmann
Switzerland's Federer returns the ball to Borg of Sweden during a tennis session on the banks of Lake Geneva in Geneva
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8,2019. REUTERS/Arnd Wiegmann
REFILE - ADDING DROPPED LETTER Bjorn Borg and Roger Federer sit aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Bjorn Borg and Roger Federer sit aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva
REFILE - ADDING DROPPED LETTER Bjorn Borg and Roger Federer sit aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer and Bjorn Borg of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Federer and Borg of Sweden pose after a tennis session to promote the Laver Cup in Geneva
Switzerland's Roger Federer and Bjorn Borg of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Bjorn Borg of Sweden (R) sits beside as Switzerland's Roger Federer addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Borg of Sweden sits beside as Switzerland's Federer addresses a news conference to promote the Laver Cup tennis tournament in Geneva
Bjorn Borg of Sweden (R) sits beside as Switzerland's Roger Federer addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8,2019. REUTERS/Arnd Wiegmann
Switzerland's Federer returns the ball to Borg of Sweden during a tennis session on the banks of Lake Geneva in Geneva
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8,2019. REUTERS/Arnd Wiegmann
Bjorn Borg of Sweden returns the ball to Switzerland's Roger Federer (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Borg of Sweden returns the ball to Switzerland's Federer during a tennis session on a temporary court on the banks of Lake Geneva in Geneva
Bjorn Borg of Sweden returns the ball to Switzerland's Roger Federer (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Tennis - Laver Cup - 3rd Day - Prague, Czech Republic - September 24, 2017 - Roger Federer of team Europe in action against Nick Kyrgios of team World. REUTERS/David W Cerny
Tennis - Laver Cup - 3rd Day - Prague, Czech Republic
Tennis - Laver Cup - 3rd Day - Prague, Czech Republic - September 24, 2017 - Roger Federer of team Europe in action against Nick Kyrgios of team World. REUTERS/David W Cerny
Switzerland's Roger Federer sits beside as Bjorn Borg of Sweden (R) addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Federer sits beside as Borg of Sweden addresses a news conference to promote the Laver Cup tennis tournament in Geneva
Switzerland's Roger Federer sits beside as Bjorn Borg of Sweden (R) addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Bjorn Borg of Sweden (R) sits beside as Switzerland's Roger Federer addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Borg of Sweden sits beside as Switzerland's Federer addresses a news conference to promote the Laver Cup tennis tournament in Geneva
Bjorn Borg of Sweden (R) sits beside as Switzerland's Roger Federer addresses a news conference to promote the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
REFILE - ADDING DROPPED LETTER Bjorn Borg of Sweden (L) and two Swiss policemen are aboard as Switzerland's Roger Federer (2nd R) steers a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Bjorn Borg of Sweden and two Swiss policemen are aboard as Switzerland's Roger Federer steers a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva
REFILE - ADDING DROPPED LETTER Bjorn Borg of Sweden (L) and two Swiss policemen are aboard as Switzerland's Roger Federer (2nd R) steers a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer and Bjorn Borg of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Federer and Borg of Sweden pose after a tennis session to promote the Laver Cup in Geneva
Switzerland's Roger Federer and Bjorn Borg of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer and Bjorn Borg (R) of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Federer and Borg of Sweden pose after a tennis session to promote the Laver Cup in Geneva
Switzerland's Roger Federer and Bjorn Borg (R) of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
REFILE - ADDING DROPPED LETTER Bjorn Borg and Roger Federer sit aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Bjorn Borg and Roger Federer sit aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva
REFILE - ADDING DROPPED LETTER Bjorn Borg and Roger Federer sit aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer and Bjorn Borg (R) of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8,2019. REUTERS/Arnd Wiegmann
Switzerland's Federer and Borg of Sweden pose after a tennis session to promote the Laver Cup in Geneva
Switzerland's Roger Federer and Bjorn Borg (R) of Sweden pose after a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8,2019. REUTERS/Arnd Wiegmann
REFILE - ADDING DROPPED LETTER Bjorn Borg and Roger Federer sit aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Bjorn Borg and Roger Federer sit aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva
REFILE - ADDING DROPPED LETTER Bjorn Borg and Roger Federer sit aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8,2019. REUTERS/Arnd Wiegmann
Switzerland's Federer returns the ball to Borg of Sweden during a tennis session on the banks of Lake Geneva in Geneva
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8,2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8,2019. REUTERS/Arnd Wiegmann
Switzerland's Federer returns the ball to Borg of Sweden during a tennis session on the banks of Lake Geneva in Geneva
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8,2019. REUTERS/Arnd Wiegmann
Bjorn Borg of Sweden returns the ball to Switzerland's Roger Federer (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Borg of Sweden returns the ball to Switzerland's Federer during a tennis session on a temporary court on the banks of Lake Geneva in Geneva
Bjorn Borg of Sweden returns the ball to Switzerland's Roger Federer (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
REFILE - ADDING DROPPED LETTER Bjorn Borg and Roger Federer pose aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Borg of Sweden and Switzerland's Federer pose aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva
REFILE - ADDING DROPPED LETTER Bjorn Borg and Roger Federer pose aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
REFILE - ADDING DROPPED LETTER Bjorn Borg and Roger Federer pose aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Borg of Sweden and Switzerland's Federer pose aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva
REFILE - ADDING DROPPED LETTER Bjorn Borg and Roger Federer pose aboard a boat during a promotion event for the Laver Cup tennis tournament on Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Federer returns the ball to Bjorn Borg of Sweden during a tennis session on the banks of Lake Geneva in Geneva
Switzerland's Roger Federer returns the ball to Bjorn Borg of Sweden (L) during a tennis session to promote the Laver Cup tennis tournament on a temporary court on the banks of Lake Geneva in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer serves a ball from a boat in front of the Jet d'Eau water fountain during a promotion event for the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer serves a ball from a boat in front of the Jet d'Eau water fountain during a promotion event for the Laver Cup tennis tournament in Geneva
Switzerland's Roger Federer serves a ball from a boat in front of the Jet d'Eau water fountain during a promotion event for the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer serves a ball from a boat in front of the Jet d'Eau water fountain during a promotion event for the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
Switzerland's Roger Federer serves a ball from a boat in front of the Jet d'Eau water fountain during a promotion event for the Laver Cup tennis tournament in Geneva
Switzerland's Roger Federer serves a ball from a boat in front of the Jet d'Eau water fountain during a promotion event for the Laver Cup tennis tournament in Geneva, Switzerland February 8, 2019. REUTERS/Arnd Wiegmann
U.S. Alpine skier Mikaela Shiffrin (R) with Swiss tennis star Roger Federer and Joe Flamm during a cooking demonstration by sponsor, Barilla, in Chicago, Illinois, U.S., September 18, 2018. Photo taken September 18, 2018. Megan Harrod/U.S. Ski & Snowboard/Handout via REUTERS
Handout photo of U.S. Alpine skier Mikaela Shiffrin posing with Swiss tennis star Roger Federer during a sponsor's event in Chicago
U.S. Alpine skier Mikaela Shiffrin (R) with Swiss tennis star Roger Federer and Joe Flamm during a cooking demonstration by sponsor, Barilla, in Chicago, Illinois, U.S., September 18, 2018. Photo taken September 18, 2018. Megan Harrod/U.S. Ski & Snowboard/Handout via REUTERS
U.S. Alpine skier Mikaela Shiffrin poses with Swiss tennis star Roger Federer during a sponsor's event in Chicago, Illinois, U.S., September 18, 2018. Megan Harrod/U.S. Ski & Snowboard/Handout via REUTERS
Handout photo of U.S. Alpine skier Mikaela Shiffrin posing with Swiss tennis star Roger Federer during a sponsor's event in Chicago
U.S. Alpine skier Mikaela Shiffrin poses with Swiss tennis star Roger Federer during a sponsor's event in Chicago, Illinois, U.S., September 18, 2018. Megan Harrod/U.S. Ski & Snowboard/Handout via REUTERS
U.S. Alpine skier Mikaela Shiffrin (R) with Swiss tennis star Roger Federer and Joe Flamm during a cooking demonstration by sponsor, Barilla, in Chicago, Illinois, U.S., September 18, 2018. Photo taken September 18, 2018. Megan Harrod/U.S. Ski & Snowboard/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. NO RESALES, NO ARCHIVE
Handout photo of U.S. Alpine skier Mikaela Shiffrin posing with Swiss tennis star Roger Federer during a sponsor's event in Chicago
U.S. Alpine skier Mikaela Shiffrin (R) with Swiss tennis star Roger Federer and Joe Flamm during a cooking demonstration by sponsor, Barilla, in Chicago, Illinois, U.S., September 18, 2018. Photo taken September 18, 2018. Megan Harrod/U.S. Ski & Snowboard/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. NO RESALES, NO ARCHIVE
U.S. Alpine skier Mikaela Shiffrin poses with Swiss tennis star Roger Federer during a sponsor's event in Chicago, Illinois, U.S., September 18, 2018. Megan Harrod/U.S. Ski & Snowboard/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. NO RESALES, NO ARCHIVE
Handout photo of U.S. Alpine skier Mikaela Shiffrin posing with Swiss tennis star Roger Federer during a sponsor's event in Chicago
U.S. Alpine skier Mikaela Shiffrin poses with Swiss tennis star Roger Federer during a sponsor's event in Chicago, Illinois, U.S., September 18, 2018. Megan Harrod/U.S. Ski & Snowboard/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. NO RESALES, NO ARCHIVE
Young Stefanos Tsitsipas, 13, now professional Greek tennis player, speaks about his idol Roger Federer and his plans to become a top tennis player in the future in this 2012 interview at Royal Tennis Hall, Stockholm, Sweden, in this still image taken from a video obtained by Reuters January 23, 2019. KUNGENS KANNA & DROTTNINGENS PRIS/via REUTERS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. MANDATORY CREDIT.
Young Stefanos Tsitsipas smiles during an interview at Royal Tennis Hall
Young Stefanos Tsitsipas, 13, now professional Greek tennis player, speaks about his idol Roger Federer and his plans to become a top tennis player in the future in this 2012 interview at Royal Tennis Hall, Stockholm, Sweden, in this still image taken from a video obtained by Reuters January 23, 2019. KUNGENS KANNA & DROTTNINGENS PRIS/via REUTERS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. MANDATORY CREDIT.
Young Stefanos Tsitsipas, 13, now professional Greek tennis player, speaks about his idol Roger Federer and his plans to become a top tennis player in the future in this 2012 interview at Royal Tennis Hall, Stockholm, Sweden, in this still image taken from a video obtained by Reuters January 23, 2019. KUNGENS KANNA & DROTTNINGENS PRIS/via REUTERS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. MANDATORY CREDIT.
Young Stefanos Tsitsipas smiles during an interview at Royal Tennis Hall
Young Stefanos Tsitsipas, 13, now professional Greek tennis player, speaks about his idol Roger Federer and his plans to become a top tennis player in the future in this 2012 interview at Royal Tennis Hall, Stockholm, Sweden, in this still image taken from a video obtained by Reuters January 23, 2019. KUNGENS KANNA & DROTTNINGENS PRIS/via REUTERS THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. MANDATORY CREDIT.
Greece's Stefanos Tsitsipas, left, is congratulated by Switzerland's Roger Federer after winning their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Andy Brownbill)
Greece's Stefanos Tsitsipas, left, is congratulated by Switzerland's Roger Federer after winning their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Andy Brownbill)
Greece's Stefanos Tsitsipas, left, is congratulated by Switzerland's Roger Federer after winning their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Andy Brownbill)
Serena Williams' coach, Patrick Mouratoglou, bottom left, sits in the player box of Greece's Stefanos Tsitsipas during his fourth round match against Switzerland's Roger Federer at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Aaron Favila)
Serena Williams' coach, Patrick Mouratoglou, bottom left, sits in the player box of Greece's Stefanos Tsitsipas during his fourth round match against Switzerland's Roger Federer at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Aaron Favila)
Serena Williams' coach, Patrick Mouratoglou, bottom left, sits in the player box of Greece's Stefanos Tsitsipas during his fourth round match against Switzerland's Roger Federer at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Aaron Favila)
FILE- In this Jan. 25, 2011 file photo, Switzerland's Stanislas Wawrinka folds his smashed racket during his quarterfinal match against compatriot Roger Federer at the Australian Open tennis championships in Melbourne, Australia. Happens all the time in top-level tennis, in fact: a public tantrum by a pro that can reveal frustration, sometimes reverses the course of a contest, usually results in a fine of thousands of dollars and even - as was the case with Serena Williams in last year's U.S. Open final - cost a player a point. (AP Photo/Andrew Brownbill, File)
FILE- In this Jan. 25, 2011 file photo, Switzerland's Stanislas Wawrinka folds his smashed racket during his quarterfinal match against compatriot Roger Federer at the Australian Open tennis championships in Melbourne, Australia. Happens all the time in top-level tennis, in fact: a public tantrum by a pro that can reveal frustration, sometimes reverses the course of a contest, usually results in a fine of thousands of dollars and even - as was the case with Serena Williams in last year's U.S. Open final - cost a player a point. (AP Photo/Andrew Brownbill, File)
FILE- In this Jan. 25, 2011 file photo, Switzerland's Stanislas Wawrinka folds his smashed racket during his quarterfinal match against compatriot Roger Federer at the Australian Open tennis championships in Melbourne, Australia. Happens all the time in top-level tennis, in fact: a public tantrum by a pro that can reveal frustration, sometimes reverses the course of a contest, usually results in a fine of thousands of dollars and even - as was the case with Serena Williams in last year's U.S. Open final - cost a player a point. (AP Photo/Andrew Brownbill, File)
Greece's Stefanos Tsitsipas celebrates after defeating Switzerland's Roger Federer in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Mark Schiefelbein)
Greece's Stefanos Tsitsipas celebrates after defeating Switzerland's Roger Federer in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Mark Schiefelbein)
Greece's Stefanos Tsitsipas celebrates after defeating Switzerland's Roger Federer in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Mark Schiefelbein)
Tennis - Australian Open - Second Round - Melbourne Park, Melbourne, Australia, January 16, 2019. Switzerland's Roger Federer shakes hands with Britain's Dan Evans after the match. REUTERS/Edgar Su
Tennis - Australian Open - Second Round
Tennis - Australian Open - Second Round - Melbourne Park, Melbourne, Australia, January 16, 2019. Switzerland's Roger Federer shakes hands with Britain's Dan Evans after the match. REUTERS/Edgar Su
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer leaves the court after losing the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su TPX IMAGES OF THE DAY
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer leaves the court after losing the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su TPX IMAGES OF THE DAY
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas in action during the match against Switzerland’s Roger Federer. REUTERS/Edgar Su TPX IMAGES OF THE DAY
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas in action during the match against Switzerland’s Roger Federer. REUTERS/Edgar Su TPX IMAGES OF THE DAY
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019 Switzerland’s Roger Federer gestures to the fans as he leaves the court after losing the match against Greece’s Stefanos Tsitsipas, while John McEnroe looks on REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019 Switzerland’s Roger Federer gestures to the fans as he leaves the court after losing the match against Greece’s Stefanos Tsitsipas, while John McEnroe looks on REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer in action during the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer in action during the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer and Greece’s Stefanos Tsitsipas during the match. REUTERS/Aly Song
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer and Greece’s Stefanos Tsitsipas during the match. REUTERS/Aly Song
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer and Greece’s Stefanos Tsitsipas during the match. REUTERS/Aly Song
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer and Greece’s Stefanos Tsitsipas during the match. REUTERS/Aly Song
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas in action during the match against Switzerland’s Roger Federer. REUTERS/Edgar Su
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas in action during the match against Switzerland’s Roger Federer. REUTERS/Edgar Su
Greece's Stefanos Tsitsipas reacts after defeating Switzerland's Roger Federer in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Andy Brownbill)
Greece's Stefanos Tsitsipas reacts after defeating Switzerland's Roger Federer in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Andy Brownbill)
Greece's Stefanos Tsitsipas reacts after defeating Switzerland's Roger Federer in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Andy Brownbill)
Greece's Stefanos Tsitsipas, left, is congratulated by Switzerland's Roger Federer after winning their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Andy Brownbill)
Greece's Stefanos Tsitsipas, left, is congratulated by Switzerland's Roger Federer after winning their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Andy Brownbill)
Greece's Stefanos Tsitsipas, left, is congratulated by Switzerland's Roger Federer after winning their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Andy Brownbill)
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Adnan Abidi
Switzerland's Roger Federer answers questions at a press conference following his fourth round loss to Greece's Stefanos Tsitsipas at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Aaron Favila)
Switzerland's Roger Federer answers questions at a press conference following his fourth round loss to Greece's Stefanos Tsitsipas at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Aaron Favila)
Switzerland's Roger Federer answers questions at a press conference following his fourth round loss to Greece's Stefanos Tsitsipas at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Aaron Favila)
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer speaks duriong a news conference after losing the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer speaks duriong a news conference after losing the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer and Greece’s Stefanos Tsitsipas greet each other after the match. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer and Greece’s Stefanos Tsitsipas greet each other after the match. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer reacts during the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer reacts during the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su
Greece's Stefanos Tsitsipas celebrates after defeating Switzerland's Roger Federer in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019.(AP Photo/Kin Cheung)
Greece's Stefanos Tsitsipas celebrates after defeating Switzerland's Roger Federer in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019.(AP Photo/Kin Cheung)
Greece's Stefanos Tsitsipas celebrates after defeating Switzerland's Roger Federer in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019.(AP Photo/Kin Cheung)
Greece's Stefanos Tsitsipas, right, is congratulated by Switzerland's Roger Federer after winning their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Mark Schiefelbein)
Greece's Stefanos Tsitsipas, right, is congratulated by Switzerland's Roger Federer after winning their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Mark Schiefelbein)
Greece's Stefanos Tsitsipas, right, is congratulated by Switzerland's Roger Federer after winning their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Mark Schiefelbein)
Patrick Mouratoglou smiles after watching Greece's Stefanos Tsitsipas defeat Switzerland's Roger Federer in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Mark Schiefelbein)
Patrick Mouratoglou smiles after watching Greece's Stefanos Tsitsipas defeat Switzerland's Roger Federer in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Mark Schiefelbein)
Patrick Mouratoglou smiles after watching Greece's Stefanos Tsitsipas defeat Switzerland's Roger Federer in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Mark Schiefelbein)
Switzerland's Roger Federer waves as he leaves Rod Laver Arena after losing his fourth round match against Greece's Stefanos Tsitsipas at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Mark Schiefelbein)
Switzerland's Roger Federer waves as he leaves Rod Laver Arena after losing his fourth round match against Greece's Stefanos Tsitsipas at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Mark Schiefelbein)
Switzerland's Roger Federer waves as he leaves Rod Laver Arena after losing his fourth round match against Greece's Stefanos Tsitsipas at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Mark Schiefelbein)
<p> Switzerland's Roger Federer answers questions at a press conference following his fourth round loss to Greece's Stefanos Tsitsipas at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Aaron Favila) </p>
Federer, 37, shocked by Tsitsipas, 20, at Australian Open

Switzerland's Roger Federer answers questions at a press conference following his fourth round loss to Greece's Stefanos Tsitsipas at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Aaron Favila)

Switzerland's Roger Federer answers questions at a press conference following his fourth round loss to Greece's Stefanos Tsitsipas at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Aaron Favila)
Switzerland's Roger Federer answers questions at a press conference following his fourth round loss to Greece's Stefanos Tsitsipas at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Aaron Favila)
Switzerland's Roger Federer answers questions at a press conference following his fourth round loss to Greece's Stefanos Tsitsipas at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Aaron Favila)
Greece's Stefanos Tsitsipas makes a forehand return to Switzerland's Roger Federer during their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Mark Schiefelbein)
Greece's Stefanos Tsitsipas makes a forehand return to Switzerland's Roger Federer during their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Mark Schiefelbein)
Greece's Stefanos Tsitsipas makes a forehand return to Switzerland's Roger Federer during their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Mark Schiefelbein)
Greece's Stefanos Tsitsipas reacts after defeating Switzerland's Roger Federer in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Andy Brownbill)
Greece's Stefanos Tsitsipas reacts after defeating Switzerland's Roger Federer in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Andy Brownbill)
Greece's Stefanos Tsitsipas reacts after defeating Switzerland's Roger Federer in their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Andy Brownbill)
Switzerland's Roger Federer, right, leaves Rod Laver Arena after losing his fourth round match to Greece's Stefanos Tsitsipas at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Kin Cheung)
Switzerland's Roger Federer, right, leaves Rod Laver Arena after losing his fourth round match to Greece's Stefanos Tsitsipas at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Kin Cheung)
Switzerland's Roger Federer, right, leaves Rod Laver Arena after losing his fourth round match to Greece's Stefanos Tsitsipas at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Kin Cheung)
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 21, 2019. Supporter of Switzerland’s Roger Federer watches the match between Russia’s Anastasia Pavlyuchenkova and Sloane Stephens of the U.S. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 21, 2019. Supporter of Switzerland’s Roger Federer watches the match between Russia’s Anastasia Pavlyuchenkova and Sloane Stephens of the U.S. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 21, 2019. Supporter of Switzerland’s Roger Federer watches the match between Russia’s Anastasia Pavlyuchenkova and Sloane Stephens of the U.S. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 21, 2019. Supporter of Switzerland’s Roger Federer watches the match between Russia’s Anastasia Pavlyuchenkova and Sloane Stephens of the U.S. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer in action during the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer in action during the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer wipes his face with a towel during the match against Greece’s Stefanos Tsitsipas. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer wipes his face with a towel during the match against Greece’s Stefanos Tsitsipas. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer and Greece’s Stefanos Tsitsipas greet each other after the match. REUTERS/Aly Song
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer and Greece’s Stefanos Tsitsipas greet each other after the match. REUTERS/Aly Song
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Aly Song TPX IMAGES OF THE DAY
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Aly Song TPX IMAGES OF THE DAY
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer in action during the match against Greece’s Stefanos Tsitsipas. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer in action during the match against Greece’s Stefanos Tsitsipas. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Edgar Su
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Edgar Su
<p> Greece's Stefanos Tsitsipas, left, is congratulated by Switzerland's Roger Federer after winning their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Andy Brownbill) </p>
Child is father of the man: Federer loses to Tsitsipas, 20

Greece's Stefanos Tsitsipas, left, is congratulated by Switzerland's Roger Federer after winning their fourth round match at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 20, 2019. (AP Photo/Andy Brownbill)

Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas in action during the match against Switzerland’s Roger Federer. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas in action during the match against Switzerland’s Roger Federer. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer leaves the court after losing the match against Greece’s Stefanos Tsitsipas. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer leaves the court after losing the match against Greece’s Stefanos Tsitsipas. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer leaves the court after losing the match against Greece’s Stefanos Tsitsipas. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer leaves the court after losing the match against Greece’s Stefanos Tsitsipas. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer speaks duriong a news conference after losing the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer speaks duriong a news conference after losing the match against Greece’s Stefanos Tsitsipas. REUTERS/Edgar Su
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer gestures as he leaves the court after losing the match against Greece’s Stefanos Tsitsipas. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer gestures as he leaves the court after losing the match against Greece’s Stefanos Tsitsipas. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer leaves the court after losing the match against Greece’s Stefanos Tsitsipas. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Switzerland’s Roger Federer leaves the court after losing the match against Greece’s Stefanos Tsitsipas. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Patrick Mouratoglou, coach of Greece’s Stefanos Tsitsipas, supports during his match against Switzerland’s Roger Federer. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Patrick Mouratoglou, coach of Greece’s Stefanos Tsitsipas, supports during his match against Switzerland’s Roger Federer. REUTERS/Adnan Abidi
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Aly Song
Tennis - Australian Open - Fourth Round
Tennis - Australian Open - Fourth Round - Melbourne Park, Melbourne, Australia, January 20, 2019. Greece’s Stefanos Tsitsipas reacts after winning the match against Switzerland’s Roger Federer. REUTERS/Aly Song

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