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PARIS, FRANCE - MAY 29: Kei Nishikori of Japan plays a backhand during his mens singles second round match against Jo Wilfred Tsonga of France during Day four of the 2019 French Open at Roland Garros on May 29, 2019 in Paris, France. (Photo by Clive Brunskill/Getty Images)

PARIS, FRANCE - MAY 29:  Kei Nishikori of Japan plays a backhand during his mens singles second round match against Jo Wilfred Tsonga of France during Day four of the 2019 French Open at Roland Garros on May 29, 2019 in Paris, France. (Photo by Clive Brunskill/Getty Images)