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MELBOURNE, AUSTRALIA - JANUARY 22: Kei Nishikori of Japan plays a backhand in his third round match against Guillermo Garcia-Lopez of Spain during day five of the 2016 Australian Open at Melbourne Park on January 22, 2016 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 22:  Kei Nishikori of Japan plays a backhand in his third round match against Guillermo Garcia-Lopez of Spain during day five of the 2016 Australian Open at Melbourne Park on January 22, 2016 in Melbourne, Australia.  (Photo by Scott Barbour/Getty Images)