Her opponent on Saturday will be No. 1 Simona Halep, the two-time runner-up who will have another shot in the French Open final after beating No. 3 Garbine Muguruza 6-1, 6-4. The victor earns a berth in the final at Roland Garros, plus the number one ranking that now belongs to Halep.
The top-seed finished at the receiving end here in 2014 (to Maria Sharapova) and 2017 (to Jelena Ostapenko, against who she led by a set and 3-0), besides making the final in Melbourne, where she lost to Caroline Wozniacki in January.
The second semi-final today sees a repeat of last year's US Open final between Sloane Stephens and Madison Keys, where Stephens blitzed her American counterpart.
Twelve months ago, while Simona Halep was crumbling to defeat in the French Open final, Sloane Stephens was off the tour, attending the wedding of a friend in Ireland.
"I lost three times until now and no one died", Halep said, "so it will be OK". Halep said: "I feel calm". The 25-year-old displayed exactly that against Russian youngster Daria Kasatkina on Tuesday and there was no getting past the 2017 US Open champion anymore in the second set."Sometimes I start well and sometimes a little sluggish".
"I am really happy that I won the match, it was very important for my mind and I gave it all I had", said Romanian star Halep.More news: Destiny 2 announces Forsaken expansion, a shot at redemption
More news: Microsoft sinks datacentre off Orkney to create eco-friendly internet
More news: USA trade tariffs are economic sanctions in disguise, says Putin
The 24-year-old Spaniard stopped the rot in the sixth game before Halep quickly reasserted her authority. It would be very unusual, I think, if I didn't write anything about her. She's clear on who she is as a player. In the victory, Halep won 61 percent of her first serve points and 53 percent of her second serve points.
"She was playing incredible right away, and I think I should have done something a little bit better to not let it go so fast".
But she is competing at a very high level again in Paris on what looks like her best surface. "It was before because I really wanted to get there, but now my goals are different".
The injured-plagued former US Open champion battled through in three hours and 50 minutes after the match had been delayed by rain on Wednesday to reach the last four at Roland Garros for the second time, but first in nine years.
Tenth seed Stephens broke in the third game to gain an early grip on the first set, eventually serving it out and sealing it when Keys netted a forehand. Halep showed great fight in her quarterfinal victory, as she fought back after dropping a tough first set tiebreak and dominated in the final two sets.
Her shots were very, very deep and very aggressive constantly.' 'It was a very hard match', she added.
"Life came at me fast after the U.S. Open", said Stephens, whose late father, John, was the 1988 NFL Offensive Rookie of the Year with the New England Patriots.