Roger Federer

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

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer in action during his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Australian cricketer Shane Warne attends the men's singles semi-final match between Andy Murray of Britain and Roger Federer of Switzerland at the Australian Open tennis tournament in Melbourne

Australian cricketer Shane Warne attends the men's singles semi-final match between Andy Murray of Britain and Roger Federer of Switzerland at the Australian Open tennis tournament in Melbourne January 25, 2013. REUTERS/Tim Wimborne (AUSTRALIA - Tags: SPORT TENNIS SPORT CRICKET)

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer in action during his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Marin Cilic of Croatia serves to to Roger Federer of Switzerland during their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)

Roger Federer of Switzerland plays a return to Marin Cilic of Croatia during their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)

Marin Cilic of Croatia plays a return to Roger Federer of Switzerland during their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)

Roger Federer of Switzerland serves to Marin Cilic of Croatia during their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Croatia's Marin Cilic in action during his group stage match against Switzerland's Roger Federer REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer in action during his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer poses for a picture with fans after winning his group stage match against Croatia's Marin Cilic Action Images via Reuters/Tony O'Brien

Roger Federer of Switzerland plays a return to Marin Cilic of Croatia during their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer in action during his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer in action during his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer celebrates after winning his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer in action during his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer celebrates after winning his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Croatia's Marin Cilic in action during his group stage match against Switzerland's Roger Federer REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Croatia's Marin Cilic in action during his group stage match against Switzerland's Roger Federer REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer in action during his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer celebrates after winning his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Croatia's Marin Cilic in action during his group stage match against Switzerland's Roger Federer Action Images via Reuters/Tony O'Brien

Roger Federer of Switzerland plays a return to Marin Cilic of Croatia during their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)

Roger Federer of Switzerland wipes his face as he plays against Marin Cilic of Croatia during their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)

Marin Cilic of Croatia changes his shirt during a change of ends as he plays against Roger Federer of Switzerland during their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)

Marin Cilic of Croatia plays a return to Roger Federer of Switzerland during their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)

Roger Federer of Switzerland plays a return to Marin Cilic of Croatia during their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)

Roger Federer of Switzerland plays a return to Marin Cilic of Croatia during their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)

Roger Federer of Switzerland plays a return to Marin Cilic of Croatia during their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)

Roger Federer of Switzerland plays a return to Marin Cilic of Croatia during their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Croatia's Marin Cilic in action during his group stage match against Switzerland's Roger Federer REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer in action during his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer in action during his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Croatia's Marin Cilic in action during his group stage match against Switzerland's Roger Federer REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer in action during his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Roger Federer of Switzerland celebrates after defeating Marin Cilic of Croatia in their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer celebrates after winning his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer in action during his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Tennis - ATP World Tour Finals

Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 16, 2017 Switzerland's Roger Federer in action during his group stage match against Croatia's Marin Cilic REUTERS/Toby Melville

Roger Federer of Switzerland celebrates after defeating Marin Cilic of Croatia in their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)

Roger Federer of Switzerland celebrates after defeating Marin Cilic of Croatia in their mens singles match at the ATP World Finals at the O2 Arena in London, Thursday, Nov. 16, 2017. (AP Photo/Alastair Grant)