Zheng Qinwen stuns Madison Keys with a spectacular rally at the US Open. Fritz, Anisimova also lose
- Zheng Qinwen achieved a remarkable comeback, winning seven consecutive games to defeat Madison Keys
- Taylor Fritz, the No. 9 seed, lost after blowing a two-set lead to No. 24 Francisco Cerundolo
- Amanda Anisimova, the No. 10 seed, was eliminated by No. 24 Anastasia Potapova
