Coco Gauff advanced to the fourth round of the US Open with a 6-3 6-4 win over Spain's Cristina Bucsa, continuing her bid for a second title in New York, but it was a mixed day for American hopes as both Madison Keys and Amanda Anisimova were knocked out. Keys' exit was particularly striking, as she led China's Zheng Qinwen 5-0 in the deciding set before collapsing to lose seven straight games, while last year's runner-up Anisimova fell in straight sets to Anastasia Potapova.

Despite those losses, American interest remains strong, with five women — Gauff, Jessica Pegula, Taylor Townsend, Emma Navarro and teenager Iva Jovic — through to the last 16, alongside five American men including Ben Shelton and Frances Tiafoe. Gauff, the 2023 champion, recovered from an early deficit to reach the second week for a fifth consecutive year and will next face 14th seed Jovic. Keys, the 2025 Australian Open winner, admitted she felt "scared" during her collapse and said she needed to make changes after struggling through the year's majors.