Jessica Pegula advanced to her first Grand Slam semifinal by defeating top seed Iga Swiatek 6-2, 6-4, utilizing Swiatek's 41 unforced errors and service struggles. Pegula's victory continues the trend of American success at the U.S. Open, where she joins compatriots Taylor Fritz and Frances Tiafoe in the semifinals. Meanwhile, men's world No. 1 Jannik Sinner overcame Daniil Medvedev 6-2, 1-6, 6-1, 6-4 and will face Jack Draper, who reached the semifinals after defeating Alex de Minaur. The losses for Swiatek and Medvedev guarantee that this year's U.S. Open will crown new champions. Pegula expressed her excitement about her win and credited her performance for frustrating Swiatek, while Draper acknowledged his growth as a player despite facing injuries. Both matches showcased the intense competition and shifting dynamics in this year's tournament.