Olympic gold medalist Zheng Qinwen has extended her return to the U.S. Open with a spectacular and stunning rally, winning the final seven games to eliminate No. 22 Madison Keys 1-6, 7-6 (3), 7-5. Taylor Fritz and Amanda Anisimova, like Keys past runners-up at the U.S. Open, also were knocked out. Naomi Osaka rallied from a third-set deficit to defeat Elise Mertens and move on to the fourth round. Coco Gauff and Iva Jovic will play next after each moved on, and Alexander Zverev won in straight sets.