Coco Gauff kept hopes of a second US Open title alive after reaching the semi-finals by saving two match points and battling from a set down to beat Mirra Andreeva.

The American fourth seed eventually overcame Andreeva 2-6 7-6 (9-7) 6-2 in a pulsating match that went over two hours on Wednesday.

Gauff's reward will be a last-four meeting with incoming world number one Elena Rybakina as the home favourite looks to repeat her heroics from winning this title in 2023.

Dominated in a rapid, 26-minute opening set, Gauff was twice broken to fall 4-0 down and never recovered, failing to break fifth seed Andreeva's serve.

But a partisan American crowd seemed to inspire Gauff, who twice survived break points before snatching a 4-2 lead by finally winning when Andreeva had the ball in hand.

That did trigger a run of three more consecutive breaks, however, before a scrappy second set was decided in a nerve-tingling tie-break.

Gauff faced two match points as tensions heightened, but saved both in the tie-break before carrying that momentum into a deciding set.

Two clinical breaks to go 2-1 up, and then 5-2 ahead, proved the difference as Andreeva wilted under the pressure and Gauff booked her place into the next round at Arthur Ashe Stadium.

Never back down, never WHAT? @CocoGauff secures the win in a three set thriller against Andreeva to advance to the semifinals.#USOpen pic.twitter.com/16O6qyBgXf

— wta (@WTA) September 9, 2026

Gauff hitting her stride

Gauff now boasts an impressive 6-0 WTA record against Andreeva, though this victory was far from straightforward, marking her third win from a set down in their head-to-head meetings.

The two-time major champion will think she is hitting form at the right time, though. She has won her last 11 matches and reached back-to-back semi-finals at grand slams for just the second time in her career.

Gauff previously managed three straight major semi-finals between the US Open in 2023 and Roland Garros in 2024, but this one may not have been possible without some unexpected inspiration.

On Tuesday, Frances Tiafoe came from two sets and a break down to beat fellow American Alex Michelsen in a thrilling comeback to reach the men's last four.

"At the end of the first set I was thinking about Frances and how he came back yesterday," Gauff said, referencing Tiafoe's remarkable turnaround.

"We all want to do well in front of this crowd. Honestly, I was just trying to leave the court with no regrets."

Gauff will clearly be sure to leave with no regrets again when she meets the soon-to-be world number one, Rybakina.