LONDON, ENGLAND - JUNE 26: Kei Nishikori of Japan stretches to reach for a return shot during his Gentlemen's Singles second round match against Denis Kudla of the United States on day four of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club at Wimbledon on June 26, 2014 in London, England. (Photo by Al Bello/Getty Images)
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