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)

Andy Murray, of Britain, eyes the ball to return against Hubert Hurkacz, of Poland, Wednesday, Aug. 18, 2021, during the Western & Southern Open tennis tournament at the Lindner Family Tennis Center in Mason, Ohio. (Kareem Elgazzar/The Cincinnati Enquirer via AP)

Heather Watson, of Britain, serves to Ashleigh Barty, of Australia, Wednesday, Aug. 18, 2021, during the Western & Southern Open tennis tournament at the Lindner Family Tennis Center in Mason, Ohio. (Kareem Elgazzar/The Cincinnati Enquirer via AP)

Ashleigh Barty, of Australia, recognizes the crowd after defeating Heather Watson, of Britain, Wednesday, Aug. 18, 2021, during the Western & Southern Open tennis tournament at the Lindner Family Tennis Center in Mason, Ohio. (Kareem Elgazzar/The Cincinnati Enquirer via AP)

Tennis fans watch the match between Angelique Gerber, of Germany, and Elina Svitolina, of Ukraine, Wednesday, Aug. 18, 2021, during the Western & Southern Open tennis tournament at the Lindner Family Tennis Center in Mason, Ohio. (Kareem Elgazzar/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)