LONDON, ENGLAND - JULY 06:  Novak Djokovic of Serbia eats some of the centre court grass as he kneels on the floor as he celebrates winning the Gentlemen's Singles Final match against Roger Federer of Switzerland on day thirteen of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 6, 2014 in London, England.  (Photo by Al Bello/Getty Images)