Alexander Zverev, of Germany, reacts after defeating Jannik Sinner, of Italy, during the fourth round of the U.S. Open tennis championships, Tuesday, Sept. 5, 2023, in New York. Alexander Zverev, of Germany, reacts after defeating Jannik Sinner, of Italy, during the fourth round of the U.S. Open tennis championships, Tuesday, Sept. 5, 2023, in New York. Alexander Zverev, of Germany, reacts after defeating Jannik Sinner, of Italy, during the fourth round of the U.S. Open tennis championships, Tuesday, Sept. 5, 2023, in New York. Alexander Zverev, of Germany, reacts after defeating Jannik Sinner, of Italy, during the fourth round of...