LONDON, ENGLAND - JUNE 25: Novak Djokovic of Serbia slips during his Gentlemen's Singles second round match against Radek Stepanek of Czech Republic on day three of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club at Wimbledon on June 25, 2014 in London, England. (Photo by Steve Bardens/Getty Images)
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