ACAPULCO, MEXICO - FEBRUARY 24: Kei Nishikori of Japan celebrates during a men´s singles match as part of Telcel Mexican Open 2015 at Mextenis Stadium on February 24, 2015 in Acapulco, Mexico. (Photo by Hector Vivas/LatinContent via Getty Images)
ACAPULCO, MEXICO - FEBRUARY 24: Kei Nishikori of Japan celebrates during a men´s singles match as part of Telcel Mexican Open 2015 at Mextenis Stadium on February 24, 2015 in Acapulco, Mexico. (Photo by Hector Vivas/LatinContent via Getty Images)