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MELBOURNE, AUSTRALIA - JANUARY 24: Novak Djokovic of Serbia celebrates winning his third round match against Fernando Verdasco of Spain during day six of the 2015 Australian Open at Melbourne Park on January 24, 2015 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 24: Novak Djokovic of Serbia celebrates winning his third round match against Fernando Verdasco of Spain during day six of the 2015 Australian Open at Melbourne Park on January 24, 2015 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images)
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