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KEY BISCAYNE, FL - MARCH 31: Kei Nishikori of Japan shakes hands at the net after his three set victory against Gael Monfils of France in their quarter final match during the Miami Open Presented by Itau at Crandon Park Tennis Center on March 31, 2016 in Key Biscayne, Florida. (Photo by Clive Brunskill/Getty Images)

KEY BISCAYNE, FL - MARCH 31:  Kei Nishikori of Japan shakes hands at the net after his three set victory against Gael Monfils of France in their quarter final match during the Miami Open Presented by Itau at Crandon Park Tennis Center on March 31, 2016 in Key Biscayne, Florida.  (Photo by Clive Brunskill/Getty Images)