Jannik Sinner reaches U.S. Open men's final by beating Jack Draper

NEW YORK — When Taylor Fritz, a 26-year-old from California, and Frances Tiafoe, a 26-year-old from Maryland, strode under the Arthur Ashe Stadium lights Friday night for the first U.S. Open semifinal matching two American men in 19 years, the crowd might have been forgiven for not knowing which to support.