Coco Gauff came from behind to defeat Yuliia Starodubtseva and reach the semi-finals of the China Open. (More Tennis News)
Gauff was no match for the qualifier in the first set of Thursday's tie, but the American rallied back to win 2-6 6-2 6-2.
The world number six will face Paula Badosa, the 15th seed, on Saturday.
She is vying for a place in her first final since she triumphed in Auckland in January, and her first at a WTA 1000 event since she won the Cincinnati Open in 2023.
Data Debrief: Comeback queen
Including retirements, Gauff (two) has achieved multiple match wins from a set down at a single WTA 1000 event for the first time in her career, and for the first time at a single WTA event overall since last year's US Open.
Since the format's inception in 2009, meanwhile, only Caroline Wozniacki (eight) has reached more WTA 1000 semi-finals than Coco Gauff (seven) before turning 21. World number one Iga Swiatek (five) is the only other player to reach 5+ semi-finals over that span.
Badosa stands between Gauff and the final. She beat home hope Zhang Shuai in the quarters, and became the second Spaniard to reach the semi-finals of the China Open since the inception of the tournament in 2004 after Garbine Muguruza in 2015.
She is the second oldest player to reach the semi-finals of the China Open in their maiden appearance after Amelie Mauresmo in 2006.