Coco Gauff saved two match points to rally from a set down and defeat Mirra Andreeva 2-6, 7-6 (9-7), 6-2, advancing to the US Open semi-finals against Elena Rybakina. Blown away in a 26-minute opening set, the fourth seed was twice pegged back from a break up in the second set before winning a 16-point tie-break. Roared on by a partisan crowd, Gauff's resilience proved decisive in what became a mental battle. The victory marks back-to-back Grand Slam semi-finals for the two-time major champion and her first in New York since winning the 2023 title. It is the first time the top four seeds have reached the women's singles semi-finals at a major since Wimbledon 2009, after top seed Aryna Sabalenka and third seed Jessica Pegula advanced earlier.

Gauff credited compatriot Frances Tiafoe's comeback win over Alex Michelsen on Tuesday for inspiration. "At the end of the first set I was thinking about Frances and how he came back yesterday," she said. "I was just trying to leave the court with no regrets." Despite 42 unforced errors and 12 double faults, Gauff dominated the decider as Andreeva struck 14 unforced errors in the final set.

Earlier, second seed Rybakina recovered from losing a set for the first time this tournament to beat Zheng Qinwen 3-6, 6-1, 6-4. The 27-year-old Kazakhstani secured the world number one ranking for the first time by reaching the semi-finals, trailing Sabalenka by just 434 points entering the event.