Jannik Sinner, of Italy, returns to Daniil Medvedev, of Russia, during the quarterfinals of the U.S. Open tennis championships, Wednesday, Sept. 4, 2024, in New York. (AP Photo/Adam Hunger)
Jannik Sinner, of Italy, launches a ball after defeating Daniil Medvedev, of Russia, during the quarterfinals of the U.S. Open tennis championships, Wednesday, Sept. 4, 2024, in New York. (AP Photo/Adam Hunger)
Daniil Medvedev, of Russia, returns to Jannik Sinner, of Italy, during the quarterfinals of the U.S. Open tennis championships, Wednesday, Sept. 4, 2024, in New York. (AP Photo/Eduardo Munoz Alvarez)
Jannik Sinner, of Italy, acknowledges the crowd after defeating Daniil Medvedev, of Russia, during the quarterfinals of the U.S. Open tennis championships, Wednesday, Sept. 4, 2024, in New York. (AP Photo/Adam Hunger)
Daniil Medvedev, of Russia, follows through on a shot, which fails to clear the net, during his match against Jannik Sinner, of Italy, during the quarterfinals of the U.S. Open tennis championships, Wednesday, Sept. 4, 2024, in New York. (AP Photo/Adam Hunger)
Daniil Medvedev, of Russia, wipes his face during his match against Jannik Sinner, of Italy, during the quarterfinals of the U.S. Open tennis championships, Wednesday, Sept. 4, 2024, in New York. (AP Photo/Eduardo Munoz Alvarez)
Jannik Sinner, of Italy, left, shakes hands after defeating Daniil Medvedev, of Russia, during the quarterfinals of the U.S. Open tennis championships, Wednesday, Sept. 4, 2024, in New York. (AP Photo/Adam Hunger)
Jannik Sinner, of Italy, pumps his fist after winning a point against Daniil Medvedev, of Russia, during the quarterfinals of the U.S. Open tennis championships, Wednesday, Sept. 4, 2024, in New York. (AP Photo/Adam Hunger)
Daniil Medvedev, of Russia, reacts after losing a point to Jannik Sinner, of Italy, during the quarterfinals of the U.S. Open tennis championships, Wednesday, Sept. 4, 2024, in New York. (AP Photo/Eduardo Munoz Alvarez)
Daniil Medvedev, of Russia, leaps over the player's bench on a return against Jannik Sinner, of Italy, during the quarterfinals of the U.S. Open tennis championships, Wednesday, Sept. 4, 2024, in New York. (AP Photo/Adam Hunger)
Jannik Sinner, of Italy, pumps his fist after winning a point against Daniil Medvedev, of Russia, during the quarterfinals of the U.S. Open tennis championships, Wednesday, Sept. 4, 2024, in New York. (AP Photo/Adam Hunger)
Jannik Sinner, of Italy, returns against Daniil Medvedev, of Russia, during the quarterfinals of the U.S. Open tennis championships, Wednesday, Sept. 4, 2024, in New York. (AP Photo/Adam Hunger)
Daniil Medvedev, of Russia, chases the ball on a return to Jannik Sinner, of Italy, during the quarterfinals of the U.S. Open tennis championships, Wednesday, Sept. 4, 2024, in New York. (AP Photo/Adam Hunger)