Novak Djokovic of Serbia reacts after defeating Marin Cilic of Croatia in their men's singles quarter-final tennis match at the Wimbledon Tennis Championships, in London July 2, 2014. REUTERS/Max ... more 
Novak Djokovic of Serbia reacts after defeating Marin Cilic of Croatia in their men's singles quarter-final tennis match at the Wimbledon Tennis Championships, in London July 2, 2014. REUTERS/Max Rossi (BRITAIN - Tags: SPORT TENNIS) less 
1 / 31
Reuters | Photo By MAX ROSSI / REUTERS
Wed, Jul 2, 2014 12:13 PM EDT