Recent round-of-16 results have clarified much of the women's singles quarterfinal picture at the 2026 US Open, with several seeded players advancing amid notable upsets. Qinwen Zheng, a low-ranked qualifier, stunned eighth seed Iga Swiatek 7-5, 6-3 after trailing 5-0 in the opening set, securing her first US Open quarterfinal appearance. No. 2 Elena Rybakina dominated Naomi Osaka 6-1, 6-4, while No. 4 Coco Gauff and No. 5 Mirra Andreeva also progressed in straight sets or three. Top seed Aryna Sabalenka and No. 3 Jessica Pegula reached the final eight earlier, setting up a competitive draw where form, serve strength, and hard-court movement continue to shape implied probabilities for remaining contenders. Quarterfinal matches begin September 8.