Novak Djokovic of Serbia and Roger Federer of Switzerland pose for a... Nachrichtenfoto - Getty Images
![Roger Federer of Switzerland waves as he arrives to announce that he is injured and unfit to play Novak Djokovic of Serbia in the men's singles final tennis match at the ATP Roger Federer of Switzerland waves as he arrives to announce that he is injured and unfit to play Novak Djokovic of Serbia in the men's singles final tennis match at the ATP](https://c8.alamy.com/compfr/2cyn0h4/roger-federer-of-switzerland-waves-as-he-arrives-to-announce-that-he-is-injured-and-unfit-to-play-novak-djokovic-of-serbia-in-the-mens-singles-final-tennis-match-at-the-atp-world-tour-finals-at-the-o2-in-london-november-16-2014-the-33-year-old-swiss-who-spent-nearly-three-hours-late-on-saturday-beating-compatriot-stanislas-wawrinka-in-a-gruelling-semi-final-announced-his-decision-on-court-as-the-o2-arena-filled-up-for-the-expected-final-federer-who-was-bidding-for-a-seventh-title-at-the-year-ender-apologised-but-said-he-was-not-match-fit-after-developing-a-back-problem-reuters-dyla-2cyn0h4.jpg)
Roger Federer of Switzerland waves as he arrives to announce that he is injured and unfit to play Novak Djokovic of Serbia in the men's singles final tennis match at the ATP
Novak Djokovic of Serbia and Roger Federer of Switzerland pose for... Nachrichtenfoto - Getty Images
Novak Djokovic of Serbia and Roger Federer of Switzerland swap ends... Nachrichtenfoto - Getty Images
![Roger Federer Switzerland (R) schüttelt Hände mit Novak Djokovic Serbien nach ihrem Spiel in der Herren Finale der US Open Tennisturnier in Flushing Meadows, New York, 9. September 2007 zu gewinnen. REUTERS/Kevin Roger Federer Switzerland (R) schüttelt Hände mit Novak Djokovic Serbien nach ihrem Spiel in der Herren Finale der US Open Tennisturnier in Flushing Meadows, New York, 9. September 2007 zu gewinnen. REUTERS/Kevin](https://c8.alamy.com/compde/2e8687b/roger-federer-switzerland-r-schuttelt-hande-mit-novak-djokovic-serbien-nach-ihrem-spiel-in-der-herren-finale-der-us-open-tennisturnier-in-flushing-meadows-new-york-9-september-2007-zu-gewinnen-reuterskevin-lamarque-vereinigte-staaten-2e8687b.jpg)
Roger Federer Switzerland (R) schüttelt Hände mit Novak Djokovic Serbien nach ihrem Spiel in der Herren Finale der US Open Tennisturnier in Flushing Meadows, New York, 9. September 2007 zu gewinnen. REUTERS/Kevin
Herren-Finale Wimbledon Rogert Federer gegen Novak Djokovic live im TV und Livestream sehen - Sportbuzzer.de
Roger Federer of Switzerland returns the ball against Novak Djokovic... Nachrichtenfoto - Getty Images
Novak Djokovic of Serbia and Roger Federer of Switzerland pose for a... Nachrichtenfoto - Getty Images
![Grand Slam Champions Roger Federer of Switzerland L and Novak Djokovic of Serbia before Semifinal Match at Australian Open 2016 Editorial Image - Image of australia, park: 184535440 Grand Slam Champions Roger Federer of Switzerland L and Novak Djokovic of Serbia before Semifinal Match at Australian Open 2016 Editorial Image - Image of australia, park: 184535440](https://thumbs.dreamstime.com/z/melbourne-australia-january-grand-slam-champions-roger-federer-switzerland-l-novak-djokovic-serbia-semifinal-match-184535440.jpg)