ACAPULCO, MEXICO - FEBRUARY 27: Kei Nishikori of Japan cools down during a match between Kei Nishikori of Japan and Denis Shapovalov of Canada as part of the Telcel Mexican Open 2018 at Mextenis Stadium on February 27, 2018 in Acapulco, Mexico. (Photo by Hector Vivas/Getty Images)
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