At Roland Garros on Tuesday, Gauff, 20, won 4-6 6-2 6-3, displaying her maturity and mentality.
Eighth seed Jabeur gave Gauff a great opening set, but Gauff never gave up and exploited her opponent’s level decline.
In the final set, Gauff faced a break point at 5-3 and failed to convert a match chance on Jabeur’s service. However, she crossed the line when her opponent threw an overhead long.
The US Open champion celebrated in the middle of the court, and the intensity of the test she had overcome was evident by the loud cheers she received.
“She’s a formidable foe,” remarked Gauff, who witnessed Jabeur lose the third match point after saving the second.
She was playing really well and hitting a lot of wins, which is something I’m not used to, so I was trying to be more aggressive.
“I got a little bit tight, but I did what I needed to do.”
Gauff, who finished second in 2022, is attempting to win a major championship for the second time after winning in New York last year.
She will face either Czech fifth seed Marketa Vondrousova in the last four, or top-seeded Polish player Iga Swiatek, who defeated her in the championship match two years ago.