Zheng Qinwen staged another remarkable comeback, winning a set from 5-0 down for the second consecutive match to defeat Iga Swiatek 7-5, 6-3 and reach the US Open quarter-finals. The reigning Olympic champion, who dropped outside the top 100 after elbow surgery in July 2025, trailed Madison Keys 5-0 in the third round before winning seven straight games. Against Swiatek on Arthur Ashe Stadium, Zheng won 13 of the next 16 games after the early deficit. The victory extends her winning streak to seven matches in New York, including three qualifying rounds, and will return her near the top 50. Zheng will face either Naomi Osaka or Elena Rybakina in the last eight.

Mirra Andreeva also reached her first US Open quarter-final, recovering to beat Anastasia Potapova. For Swiatek, the fourth-round exit ends a Grand Slam season without a major title for the first time since 2021. The six-time major winner admitted she "started to miss too much" after building a 5-0 lead. Former player Daniela Hantuchova noted Zheng is becoming "very dangerous" for remaining contenders. Zheng joins a trend of qualifiers excelling at 2026 majors, following Maja Chwalinska's run to the French Open final.