Federer said as long as he's healthy, he plans to be in Tokyo.

Gauff is the youngest champion since Nicole Vaidisova in 2004.

Alexander Zverev, 22, and Stafanos Tsitsipas, 21, pulled off big wins.

Dual citizen Naomi Osaka has decided to give up her US citizenship to compete for Japan at the Olympics.

The Italian umpire was caught telling a ball girl "very sexy" and asking if she felt hot emotionally.

A comedy duo that suggested Naomi Osaka needs to bleach her skin has since apologized.

Williams has also had the bad luck of playing younger players, he said.

Seven months after her surprising split from 2018 WTA Coach of the Year Sascha Bajin following back-to-back Grand Slam titles, Osaka is splitting from coach Jermaine Jenkins.

After 7 years away from tennis, Kim Clijsters wants to do it all: raise her 3 kids and be the best tennis player she can be.

Rafael Nadal picked up his fourth U.S. Open win after a tough match with Daniil Medvedev.

For a fourth time, Serena Williams fails to tie Margaret Court’s record of 24 major victories.

Bianca Andreescu has her first Grand Slam title at 19 years old, Serena Williams will have to wait again to tie the Grand Slam singles title record.

After the first set went to a tiebreak and lasted an hour and 14 minutes, Nadal made quick work of Matteo Berrettini in Friday night's semifinal match to move on to the final.

It took nearly three hours on Wednesday night, but Rafael Nadal is moving on to the semifinals.

Matteo Berrettini finally put away Gaël Monfils with his fifth match-point in a 5-set tiebreak thriller at the US Open.

Serena Williams had no issue reaching the semifinals on Tuesday night. Roger Federer did.

Defending US Open champ Naomi Osaka lost in the Round of 16.

No. 2 Ashleigh Barty and No. 3 Karolína Plíšková went down in the Round of 16 at the US Open on Sunday.

Novak Djokovic fell to Switzerland's Stan Wawrinka on Sunday night, retiring early due to a left shoulder injury in the third set of their fourth round match at the US Open.

Williams rolled her right ankle during her win against Petra Martic on Sunday, and will advance to the quarterfinals for the 16th time.

Here’s a recap of Saturday’s action from the USTA Billie Jean King National Tennis Center.

Naomi Osaka had little issue getting past Coco Gauff on Saturday night in the third round of the US Open.

The US Open's No. 1 seed also cursed out fans during his match on Friday.

The US Open's No. 5 seed made a full heel turn during his third-round win on Friday.

Roger Federer dominated a fatigued opponent on Friday at the US Open. Did tournament officials set it up?

Round 2 continues at Day 4 of the 2019 US Open.

Coco Gauff is the youngest player to reach the third round of the US Open since Anna Kournikova.

Taylor Townsend found her grand slam breakthrough moment on Thursday.

Naomi Osaka had two very famous sports figures in her box as she played at the US Open on Thursday.

Venus Williams disappeared into the tunnel before she could receive the coffee she ordered, leaving the ball boy a bit confused.

Rain delayed several matches, but didn't dampen the spirits of the players or spectators at Day 3 of the 2019 US Open.

Nick Kyrgios is once again erupting at an umpire at the U.S. Open.

Everything you need to know from Day 2 of the 2019 US Open.

Fifteen-year-old Coco Gauff rallied to win her first-round match at the U.S. Open.

Long live the Serena Williams-Maria Sharapova feud.

Greek star Stefanos Tsitsipas got into it with an umpire during his first round loss at the US Open on Tuesday.

Two of the top-ranked women in the world struggled early in their first round matches at the 2019 U.S. Open.

Maria Sharapova was no match for Serena Williams in a high-profile opening match at the US Open.

Serena Williams and Maria Sharapova haven't faced each other since 2016.

He could have warned us. Then again, what's the fun in that.

Competitors describe why it's so impressive a hearing-impaired player can perform at Lee's level.

Naomi Osaka retired from her quarterfinal match at the Cincinnati Masters against Sofia Kenin Friday with an apparent left knee injury.

Tiger Woods, Serena Williams and Roger Federer are drawing dangerously close to the end of their careers.

Nick Kyrgios used the guise of a bathroom break to smash two rackets before returning to the court to berate a chair umpire.

Third time was the charm for Serena Williams against Naomi Osaka.

American John Isner reached a deal with a CBD sports drink company this week, becoming the first tennis player to do so.

Coco Gauff will play her first tennis matches since fully breaking on to the scene at Wimbledon.

Coco Gauff took the largest leap of the latest WTA rankings, while Serena Williams and Simona Halep continue to build their top-10 rankings.

The men's singles final at Wimbledon featured two of the sport's most iconic stars.

Serena Williams has no plans to give up in her fight for equality.