Novak Djokovic of Serbia returns to Marin Cilic of Croatia during their men's singles quarterfinal match at the All England Lawn Tennis Championships in Wimbledon, London, Wednesday, July 2, 2014. (AP... more 
Novak Djokovic of Serbia returns to Marin Cilic of Croatia during their men's singles quarterfinal match at the All England Lawn Tennis Championships in Wimbledon, London, Wednesday, July 2, 2014. (AP Photo/Ben Curtis) less 
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Associated Press | Photo By Ben Curtis
Wed, Jul 2, 2014 10:42 AM EDT