![Roger Federer of Switzerland hits a smash to Carlos Berlocq of Argentina at the U.S. Open tennis championships in New York August 29, 2013. REUTERS/Ray Stubblebine (UNITED STATES - Tags: SPORT TENNIS Roger Federer of Switzerland hits a smash to Carlos Berlocq of Argentina at the U.S. Open tennis championships in New York August 29, 2013. REUTERS/Ray Stubblebine (UNITED STATES - Tags: SPORT TENNIS](https://c8.alamy.com/comp/2CX9B0P/roger-federer-of-switzerland-hits-a-smash-to-carlos-berlocq-of-argentina-at-the-us-open-tennis-championships-in-new-york-august-29-2013-reutersray-stubblebine-united-states-tags-sport-tennis-2CX9B0P.jpg)
Roger Federer of Switzerland hits a smash to Carlos Berlocq of Argentina at the U.S. Open tennis championships in New York August 29, 2013. REUTERS/Ray Stubblebine (UNITED STATES - Tags: SPORT TENNIS
![Novak Djokovic of Serbia tries to smash a shot to Roger Federer of Switzerland during their semi-final match at the Australian Open tennis tournament in Melbourne January 27, 2011. REUTERS/David Gray (AUSTRALIA - Novak Djokovic of Serbia tries to smash a shot to Roger Federer of Switzerland during their semi-final match at the Australian Open tennis tournament in Melbourne January 27, 2011. REUTERS/David Gray (AUSTRALIA -](https://c8.alamy.com/comp/2CYNK5K/novak-djokovic-of-serbia-tries-to-smash-a-shot-to-roger-federer-of-switzerland-during-their-semi-final-match-at-the-australian-open-tennis-tournament-in-melbourne-january-27-2011-reutersdavid-gray-australia-tags-sport-tennis-2CYNK5K.jpg)
Novak Djokovic of Serbia tries to smash a shot to Roger Federer of Switzerland during their semi-final match at the Australian Open tennis tournament in Melbourne January 27, 2011. REUTERS/David Gray (AUSTRALIA -
![Roger Federer of Switzerland jumps for a smash during his second... | Roger federer, Tennis photography, Tennis Roger Federer of Switzerland jumps for a smash during his second... | Roger federer, Tennis photography, Tennis](https://i.pinimg.com/originals/91/3f/87/913f8730bd74a0b21a25b616dd9c2832.jpg)