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PARIS, FRANCE - MAY 22: Kei Nishikori of Japan hits a forehand during the Men's Singles first round match against Simone Bolelli of Italy on day one of the 2016 French Open at Roland Garros on May 22, 2016 in Paris, France. (Photo by Julian Finney/Getty Images)

PARIS, FRANCE - MAY 22:  Kei Nishikori of Japan hits a forehand during the Men's Singles first round match against Simone Bolelli of Italy on day one of the 2016 French Open at Roland Garros on May 22, 2016 in Paris, France.  (Photo by Julian Finney/Getty Images)