LONDON, ENGLAND - JUNE 24:  Rafael Nadal of Spain plays the ball as he takes a tumble during his Gentlemen's Singles first round match against Martin Klizan of Slovakia on day two of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club at Wimbledon on June 24, 2014 in London, England.  (Photo by Al Bello/Getty Images)