Grigor Dimitrov of Bulgaria slips during his men's singles semi-final tennis match against Novak Djokovic of Serbia at the Wimbledon Tennis Championships, in London July 4, 2014. REUTERS/Toby Melville... more 
Grigor Dimitrov of Bulgaria slips during his men's singles semi-final tennis match against Novak Djokovic of Serbia at the Wimbledon Tennis Championships, in London July 4, 2014. REUTERS/Toby Melville (BRITAIN - Tags: SPORT TENNIS) less 
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Reuters | Photo By TOBY MELVILLE / REUTERS
Fri, Jul 4, 2014 11:19 AM EDT