Coco Gauff of the United States returns a shot to Karolina Muchova of Czech Republic during the women's singles final match at the China Open tennis tournament at the National Tennis Center in Beijing, Sunday, Oct. 6, 2024. (AP Photo/Achmad Ibrahim)
Jannik Sinner of Italy, right, is congratulated by Tomas Martin Etcheverry of Argentina after winning in the men's singles third round match in the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Sunday, Oct. 6, 2024. (AP Photo/Andy Wong)
Karolina Muchova of Czech Republic returns a shot to Coco Gauff of the United States during the women's singles final match at the China Open tennis tournament at the National Tennis Center in Beijing, Sunday, Oct. 6, 2024. (AP Photo/Ng Han Guan)
Jannik Sinner of Italy reacts during the men's singles match against Tomas Martin Etcheverry of Argentina in the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Sunday, Oct. 6, 2024. (AP Photo/Andy Wong)
Jannik Sinner of Italy returns a forehand shot to Tomas Martin Etcheverry of Argentina during the men's singles match in the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Sunday, Oct. 6, 2024. (AP Photo/Andy Wong)
Jannik Sinner of Italy wipes his sweat during a set break in the men's singles match against Tomas Martin Etcheverry of Argentina in the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Sunday, Oct. 6, 2024. (AP Photo/Andy Wong)
Tomas Martin Etcheverry of Argentina returns a forehand shot to Jannik Sinner of Italy during the men's singles match in the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Sunday, Oct. 6, 2024. (AP Photo/Andy Wong)
Tomas Martin Etcheverry of Argentina returns a backhand shot to Jannik Sinner of Italy during the men's singles match in the Shanghai Masters tennis tournament at Qizhong Forest Sports City Tennis Center in Shanghai, China, Sunday, Oct. 6, 2024. (AP Photo/Andy Wong)
Karolina Muchova of Czech Republic returns a shot to Coco Gauff of the United States during the women's singles final match at the China Open tennis tournament at the National Tennis Center in Beijing, Sunday, Oct. 6, 2024. (AP Photo/Ng Han Guan)
Coco Gauff of the United States reacts during her women's singles final match against Karolina Muchova of Czech Republic at the China Open tennis tournament at the National Tennis Center in Beijing, Sunday, Oct. 6, 2024. (AP Photo/Achmad Ibrahim)