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PARIS, FRANCE - MAY 23: Simone Bolelli (C) of Italy returns in an action against Kei Nishikori of Japan during their men's single first round match at the French Open tennis tournament at Roland Garros in Paris, France on May 23, 2016. (Photo by Mustafa Yalcin/Anadolu Agency/Getty Images)

PARIS, FRANCE - MAY 23: Simone Bolelli (C) of Italy returns in an action against Kei Nishikori of Japan during their men's single first round match at the French Open tennis tournament at Roland Garros in Paris, France on May 23, 2016. (Photo by Mustafa Yalcin/Anadolu Agency/Getty Images)