Fans watch Ben Shelton, of the United States, plays against Denis Shapovalov, of Canada, in the fourth set during the third round of the U.S. Open tennis championships, early Saturday, Sept. 5, 2026, in New York. (AP Photo/Adam Hunger)

Ben Shelton, right, of the United States, shakes hands with Denis Shapovalov, of Canada, after winning in four sets in the third round of the U.S. Open tennis championships, early Saturday, Sept. 5, 2026, in New York. (AP Photo/Adam Hunger)

A fans watch Ben Shelton, of the United States, plays against Denis Shapovalov, of Canada, in the fourth set during the third round of the U.S. Open tennis championships, early Saturday, Sept. 5, 2026, in New York. (AP Photo/Adam Hunger)

Alex Michelsen, of the United States, reacts after he won his match against Tomas Martin Etcheverry, of Argentina, during the fourth round of the U.S. Open tennis championships Sunday, Sept. 6, 2026, in New York. (AP Photo/Seth Wenig)

Frances Tiafoe, of the United States, reacts during a match against Daniil Medvedev, of Russia, during the fourth round of the U.S. Open tennis championships, Sunday, Sept. 6, 2026, in New York. (AP Photo/Frank Franklin II)

Aryna Sabalenka, of Belarus, reacts as she competes against Taylor Townsend, of the United States, during the fourth round of the U.S. Open tennis championships Sunday, Sept. 6, 2026, in New York. (AP Photo/Yuki Iwamura)

Carlos Alcaraz, of Spain, reacts during the fourth round of the U.S. Open tennis championships against Tommy Paul, of the United States, Sunday, Sept. 6, 2026, in New York. (AP Photo/Yuki Iwamura)

Aryna Sabalenka, of Belarus, returns the ball to Taylor Townsend, of the United States, during the fourth round of the U.S. Open tennis championships Sunday, Sept. 6, 2026, in New York. (AP Photo/Yuki Iwamura)