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TORONTO, ON - JULY 28: Kei Nishikori of Japan reacts after a missed point against Rajeev Ram of the USA during Day 4 of the Rogers Cup at the Aviva Centre on July 28, 2016 in Toronto, Ontario, Canada. (Photo by Vaughn Ridley/Getty Images)

TORONTO, ON - JULY 28:  Kei Nishikori of Japan reacts after a missed point against Rajeev Ram of the USA during Day 4 of the Rogers Cup at the Aviva Centre on July 28, 2016 in Toronto, Ontario, Canada.  (Photo by Vaughn Ridley/Getty Images)