$ 0 0 Novak Djokovic of Serbia celebrates winning the men's singles match against Radek Stepanek of Czech Republic at the All England Lawn Tennis Championships in Wimbledon, London, Wednesday, June 25, 2014.Serbia's Novak Djokovic celebrates after winning his men's singles second round match against Czech Republic's Radek Stepanek on day three of the 2014 Wimbledon Championships at The All England Tennis Club in Wimbledon, southwest London, on June 25, 2014.Radek Stepanek of the Czech Republic plays against Novak Djokovic of Serbia during their men's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Wednesday, June 25, 2014. Boris Becker watches the men's singles tennis match between Novak Djokovic of Serbia and Radek Stepanek of the Czech Republic at the Wimbledon Tennis Championships, in London June 25, 2014.Novak Djokovic of Serbia plays a return to Radek Stepanek of the Czech Republic during their men's singles match at the All England Lawn Tennis Championships in Wimbledon, London, Wednesday, June 25, 2014.