Novak Djokovic of Serbia celebrates after winning his fourth round match against Stanislas Wawrinka of Switzerland during day seven of the 2013 Australian Open at Melbourne Park on January 20, 2013 in Melbourne, Australia.
{"Image ImageDescription": "MELBOURNE, AUSTRALIA - JANUARY 20:  Novak Djokovic of Serbia celebrates after winning his fourth round match against Stanislas Wawrinka of Switzerland during day seven of the 2013 Australian Open at Melbourne Park on January 20, 2013 in Melbourne, Australia.  (Photo by Robert Prezioso/Getty Images)", "Image Copyright": "2013 Getty Images"}