Belinda Bencic, of Switzerland, returns a shot against Iga Swiatek, of Poland, during the fourth round of the US Open tennis championships, Monday, Sept. 6, 2021, in New York. (AP Photo/Elise Amendola)

Belinda Bencic, of Switzerland, celebrates her win over Iga Swiatek, of Poland, during the fourth round of the US Open tennis championships, Monday, Sept. 6, 2021, in New York. (AP Photo/Elise Amendola)