![Tennis - Barclays ATP World Tour Final's - O2 Arena - London - 28/11/10 Roger Federer - Switzerland celebrates Mandatory Credit: Action Images / Tony O'Brien Stock Photo - Alamy Tennis - Barclays ATP World Tour Final's - O2 Arena - London - 28/11/10 Roger Federer - Switzerland celebrates Mandatory Credit: Action Images / Tony O'Brien Stock Photo - Alamy](https://c8.alamy.com/comp/2EHRJB9/tennis-barclays-atp-world-tour-finals-o2-arena-london-281110-roger-federer-switzerland-celebrates-mandatory-credit-action-images-tony-obrien-2EHRJB9.jpg)
Tennis - Barclays ATP World Tour Final's - O2 Arena - London - 28/11/10 Roger Federer - Switzerland celebrates Mandatory Credit: Action Images / Tony O'Brien Stock Photo - Alamy
![Roger Federer, Federer, Switzerland, Europe, tennis player, tennis, player, match, sports, man, Stock Photo, Picture And Rights Managed Image. Pic. H44-10826533 | agefotostock Roger Federer, Federer, Switzerland, Europe, tennis player, tennis, player, match, sports, man, Stock Photo, Picture And Rights Managed Image. Pic. H44-10826533 | agefotostock](https://t1.thpservices.com/previewimage/gallil/bff176cfa3e7d35f5581d16ca733059a/pah-190715-99-66789-dpai.jpg)
Roger Federer, Federer, Switzerland, Europe, tennis player, tennis, player, match, sports, man, Stock Photo, Picture And Rights Managed Image. Pic. H44-10826533 | agefotostock
![14 July 2019, Great Britain, London: Tennis: Grand Slam/ATP Tour, Wimbledon, Individual, Men, Final, Stock Photo, Picture And Rights Managed Image. Pic. PAH-190715-99-65904-DPAI | agefotostock 14 July 2019, Great Britain, London: Tennis: Grand Slam/ATP Tour, Wimbledon, Individual, Men, Final, Stock Photo, Picture And Rights Managed Image. Pic. PAH-190715-99-65904-DPAI | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/58de4d159dae87da3811fec5c985de88/pah-190715-99-65904-dpai.jpg)
14 July 2019, Great Britain, London: Tennis: Grand Slam/ATP Tour, Wimbledon, Individual, Men, Final, Stock Photo, Picture And Rights Managed Image. Pic. PAH-190715-99-65904-DPAI | agefotostock
![LONDON, ENGLAND - NOVEMBER 17: Dominic Thiem of Switzerland in action during his singles match against Milos Raonic of Canada on day five of the ATP World Tour Finals at the O2 LONDON, ENGLAND - NOVEMBER 17: Dominic Thiem of Switzerland in action during his singles match against Milos Raonic of Canada on day five of the ATP World Tour Finals at the O2](https://c8.alamy.com/comp/MN4FY5/london-england-november-17-dominic-thiem-of-switzerland-in-action-during-his-singles-match-against-milos-raonic-of-canada-on-day-five-of-the-atp-world-tour-finals-at-the-o2-arena-on-november-17-2016-in-london-england-MN4FY5.jpg)
LONDON, ENGLAND - NOVEMBER 17: Dominic Thiem of Switzerland in action during his singles match against Milos Raonic of Canada on day five of the ATP World Tour Finals at the O2
![London, UK. 12th Nov, 2019. Roger FEDERER (Switzerland) during day 3 of the Nitto ATP Tennis Finals London at the O2, London, England on 12 November 2019. Photo by Andy Rowland. Credit: London, UK. 12th Nov, 2019. Roger FEDERER (Switzerland) during day 3 of the Nitto ATP Tennis Finals London at the O2, London, England on 12 November 2019. Photo by Andy Rowland. Credit:](https://c8.alamy.com/comp/2A92AT6/london-uk-12th-nov-2019-roger-federer-switzerland-during-day-3-of-the-nitto-atp-tennis-finals-london-at-the-o2-london-england-on-12-november-2019-photo-by-andy-rowland-credit-prime-media-imagesalamy-live-news-2A92AT6.jpg)
London, UK. 12th Nov, 2019. Roger FEDERER (Switzerland) during day 3 of the Nitto ATP Tennis Finals London at the O2, London, England on 12 November 2019. Photo by Andy Rowland. Credit:
Sport, Wimbledon Lawn Tennis Championships, London, England, 6th July... Nachrichtenfoto - Getty Images
![Stan Wawrinka of Switzerland gestures towards the coaches and family box of Roger Federer of Switzerland, during their semi-final tennis match at the ATP World Tour Finals at the O2 Arena in Stan Wawrinka of Switzerland gestures towards the coaches and family box of Roger Federer of Switzerland, during their semi-final tennis match at the ATP World Tour Finals at the O2 Arena in](https://c8.alamy.com/compfr/2e69x69/stan-wawrinka-of-switzerland-gestures-towards-the-coaches-and-family-box-of-roger-federer-of-switzerland-during-their-semi-final-tennis-match-at-the-atp-world-tour-finals-at-the-o2-arena-in-london-november-15-2014-switzerlands-potential-davis-cup-fairytale-this-weekend-has-become-clouded-by-uncertainty-over-the-fitness-of-federer-and-suggestions-of-strained-relations-between-the-all-time-great-and-his-team-mate-wawrinka-not-only-did-the-draining-final-moments-of-federers-win-at-the-atp-tour-finals-semi-final-against-wawrinka-reawaken-his-old-back-trouble-forcing-him-to-withdraw-before-s-2e69x69.jpg)