American teenager Coco Gauff powered past compatriot Sloane Stephens 7-5 6-2 to book a French Open semi-final spot in her biggest victory at a grand slam.
The 18-year-old, who is the youngest player left in the draw, will next play Italy's Martina Trevisan for a place in Saturday's final.
Gauff, the youngest female player to reach multiple grand slam quarter-finals since 2007 after also reaching the French Open last eight in 2021, stormed to a 3-0 lead in a one-sided start to the all-American encounter.
With Gauff forcing the 29-year-old Stephens to the net with a string of well-executed drop shots and holding serve confidently, she cruised to a 5-2 lead.
Stephens, a US Open champion in 2017 and a finalist in Paris a year later, battled to get the breaks back and levelled at 5-5.
Gauff, who has not dropped a set in her run to last four, recovered just in time to win eight of the next nine points and bag the opening set.
Another break put her 3-1 up in the second, but the teenager showed nerves when she double-faulted twice in the next game to give Stephens three break chances.
However, she wasted them all, including an easy volley to allow her opponent to go 4-1 up.
While Stephens may rue her missed chances throughout the match, Gauff managed to return almost everything her opponent threw at her.
Another lengthy rally ended with Stephens sinking a forehand into the net and Gauff going 5-1 up.
Instead of serving out the match, she double-faulted twice again to give her opponent a brief reprieve before winning it on Stephens' serve in the very next game.
"I feel so happy right now that words can't explain," Gauff said afterwards. "Last year's quarter-final was a tough loss and it made me stronger and better prepared for moments like today.
"Last time I played (Stephens) I lost, so I’m glad today it went different. I told myself to stay mentally there, and that I know there would be shots that I should probably have made.
"And there would be some shots that she would get in the court that no players can reach. It was a mental challenge."
Coco in control 🎮#RolandGarros | @CocoGauff pic.twitter.com/wHADr04eS5
— Roland-Garros (@rolandgarros) May 31, 2022
Martina Trevisan maintained her impressive form with a 6-2 6-7 (3-7) 6-3 defeat of Canadian teenager Leylah Fernandez.
Trevisan had all the answers as she dominated most of the match against a below-par Fernandez, who struggled to repeat the form that took her to last year's US Open final.
The world number 59 could have won in straight sets but wavered when serving for the match at 5-4 in the second as fellow left-hander Fernandez dug deep to stay in the contest.
Fernandez comfortably claimed the tiebreak to become the first player to take a set off Trevisan at Roland Garros this year, but it was to prove only a brief respite.
Trevisan raced into a 3-0 lead in the deciding set and won a fiercely-contested fourth game to earn a double break.
Seventeenth seed Fernandez, who was treated for a foot injury in the first set, was never going to go away quietly though and broke serve twice herself to claw back to 3-5.
The nerves were obvious as Trevisan again served for the match but this time she would not be denied as she secured the win with an angled crosscourt forehand.
"I felt a bit nervous on the match point (in the second set) but it was normal to feel that emotion because this was only my second grand slam quarter-final," the 28-year-old Italian, who won her first WTA title in Rabat this month, said.
"I came here with a lot of energy and to put all my emotion on the court."
