Novak Djokovic of Serbia returns to Jeremy Chardy of France in their Men's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Saturday, June 29, 2013. (AP Photo/Sang Tan)

Photo by: Sang Tan

Novak Djokovic of Serbia returns to Jeremy Chardy of France in their Men's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Saturday, June 29, 2013. (AP Photo/Sang Tan)