Jakub Mensik has battled past Brazilian breakout star Joao Fonseca with a 6-4 6-3 7-6(3) win to make the semi-finals of the French Open and become the youngest Czech man to reach that stage at a Grand Slam.
While Fonseca fell, fellow teenager Mirra Andreeva returned to the semi-finals with a 6-0 6-3 win over practice partner Sorana Cirstea to keep her superb Roland Garros run going.
Days after collapsing on the red dirt of Paris following a second-round victory in sweltering conditions, the 20-year-old Mensik shone on a cool Tuesday evening following a spell of rain to book a last-four clash with title favourite Alexander Zverev.
"I'm still in the match a little bit," Mensik said in his on-court interview after surpassing compatriot Ivan Lendl who made the 1981 Paris semi-finals at the age of 21.
"Joao is a great guy and a great competitor. Before the match, I knew it would be a tough one. We started a bit nervous and at the end of the match, there were some incredible shots.
"I'm super happy I was the one who came back. I managed to stay focused and keep fighting until the end."
The ice-cool Mensik tightened his grip on the contest when the second set unfolded in similar fashion, as the 19-year-old Fonseca's serve let him down at a crucial moment and he then struggled to find a way past the wall in front of him.
The youngest Roland Garros men's quarter-final since a 20-year-old Rafa Nadal defeated a teenage Novak Djokovic in 2006 looked in danger of becoming a rout as Mensik bagged the set when his opponent pushed a shot wide.
With his adoring Brazilian fans stunned and the frustration rising, Fonseca came out firing in the third set, but was broken when serving for it at 5-4. Mensik drew level before wasting six match points and eventually prevailing via a tiebreak.
"The last game and tiebreak was one of my best performances so far," said Mensik, who was mentored by Djokovic in the past.
"It was really tough to stay focused till the end and I'm happy that I managed to come back in the tiebreak and move my game a little bit forward."
DESTINY'S CHILD
Andreeva said she believed destiny was guiding her progress this year, 12 months after a tearful implosion when she was left frustrated by the home crowd during her quarter-final defeat to Frenchwoman Lois Boisson.
"I believe that everything happens for a reason, and if I wasn't able to reach the semi-finals of another Grand Slam, then I guess that's what should have happened," Andreeva said.
"I'm happy that I'm back in the semi-finals again. I think I'm just going to try to keep using the same mindset of giving my best, giving my 100% no matter what happens.
"I feel like it's just easier for me to play when I have this mindset on."
Now among the leading contenders for a maiden Grand Slam title with defending champion Coco Gauff and four-times winner Iga Swiatek out, the Russian plays Marta Kostyuk after she won an all-Ukrainian clash with Elina Svitolina 6-3 2-6 6-2.
POLITICAL BACKDROP
The semi-final, however, will unfold against a backdrop that stretches beyond tennis, with Kostyuk sharply criticising Russian players and their silence over the war in Ukraine as she surged into a maiden Grand Slam semi-final this week.
Hours after another night of Russian strikes on Ukraine's capital Kyiv, Kostyuk said she no longer accepted the argument that Russian athletes could remain silent because of possible repercussions at home.
"It's not frustrating anymore. They're all grown-ups. They know what they're talking about. They know what's going on. They have phones. They have Instagram. They have news and are clearly aware of what's going on.
"If this is something that they want to avoid talking about, they have to live with this, not me."
Zverev continued his bid for a maiden Grand Slam title, recovering from a slow start to beat Spanish teenager Rafael Jodar 7-6(3) 6-1 6-3 and reach the semis.
"It shows that we have a great group of young players that are playing fantastic tennis," Zverev said, shortly before the match between Fonseca and Mensik.
"For me, it doesn't matter. I focus on the next match."
Meanwhile, Belarussian Aryna Sabalenka passed one of her sternest tests yet in her pursuit of a maiden French Open crown, overpowering Naomi Osaka 7-5, 6-3 in a pulsating duel.
She next takes on Russian Diana Shnaider, who shrugged off a second-set blip to overcome American Madison Keys 6-3, 3-6, 6-0 in another stunning upset of a major champion at the claycourt grand slam this year.
Anna Kalinskaya also continued her journey into a maiden French Open quarterfinal with a 6-4, 2-6, 7-6 (9-7) win over 28th seed Anastasia Potapova, while Diane Parry, the last Frenchwoman standing at Roland Garros, was defeated 6-3, 6-2 by Polish qualifier Maja Chwalinska.
With world No 1 Jannik Sinner knocked out, Flavio Cobolli ensured Italian presence in the last eight by beating American Zachary Svajda 6-2, 6-3, 6-7 (3-7), 7-6 (7-5), before Matteo Berrettini downed Juan Manuel Cerundolo 6-3, 7-6 (7-2), 7-6 (8-6).
Canadian fourth seed Felix Auger-Aliassime dismissed Chilean Alejandro Tabilo 6-3, 7-5, 6-1 and completed his set of grand slam quarterfinal appearances.
