Naomi Osaka of Japan hits the ball to Cori Gauff of the United States during the Western & Southern Open tennis tournament at the Lindner Family Tennis Center, Wednesday, Aug. 18, 2021 in Mason, Ohio.(Cara Owsley/The Cincinnati Enquirer via AP)

Naomi Osaka enters Center Court during the Western & Southern Open tennis tournament at the Lindner Family Tennis Center, Wednesday, Aug. 18, 2021 in Mason, Ohio.(Cara Owsley/The Cincinnati Enquirer via AP)