Taylor Fritz, of the United States, reacts after defeating Casper Ruud, of Norway, during the fourth round of the U.S. Open tennis championships, Sunday, Sept. 1, in New York. 2024. (AP Photo/Eduardo Munoz Alvarez)

Jessica Pegula, of the United States, right, shakes hands after defeating Iga Świątek, of Poland, left, during the quarterfinals of the U.S. Open tennis championships, Wednesday, Sept. 4, 2024, in New York. (AP Photo/Adam Hunger)

Taylor Fritz, of the United States, reacts after defeating Alexander Zverev, of Germany, during the quarterfinals of the U.S. Open tennis championships, Tuesday, Sept. 3, 2024, in New York. (AP Photo/Kirsty Wigglesworth)

Frances Tiafoe, of the United States, reacts after defeating Alexei Popyrin, of Australia, during the fourth round of the U.S. Open tennis tournament Sunday, Sept. 1, 2024, in New York. (AP Photo/Adam Hunger)

Emma Navarro, of the United States, reacts after defeating Paula Badosa, of Spain, during the quarterfinals of the U.S. Open tennis championships, Tuesday, Sept. 3, 2024, in New York. (AP Photo/Pamela Smith)

Frances Tiafoe, of the United States, celebrates after winning a point against Grigor Dimitrov, of Bulgaria, during the quarterfinals of the U.S. Open tennis championships, Tuesday, Sept. 3, 2024, in New York. (AP Photo/Adam Hunger)