Denmark's Caroline Wozniacki continued her dream comeback by reaching the US Open fourth round - where she will meet American sixth seed Coco Gauff.
Former world number one Wozniacki, who retired in 2020 and had two children before returning in August, beat American Jennifer Brady 4-6 6-3 6-1.
"If I play my best tennis, I know I'm tough to beat," Wozniacki, 33, said.
Gauff, 20, struggled in the first set against Belgium's Elise Mertens before fighting back to win 3-6 6-3 6-0.
There were also wins for Poland's defending champion Iga Swiatek and French Open finalist Karolina Muchova on day five at Flushing Meadows.