Gregor Dimitrov beat top seed Carlos Alcaraz in straight sets to book a place in the Miami Open semi-final.
The Bulgarian, seeded 11th, won 6-2 6-4 to book a last-four meeting with Germany’s world number five Alexander Zverev.
Dimitrov made a fast start as he opened a 3-0 lead and Alcaraz, chasing back-to-back titles after winning in Indian Wells, was never able to get back on terms.
He fought back from 4-1 down in the second set, but Dimitrov broke again to seal his second successive win over the Spaniard.
“I think overall, to win against him, you have to play at your best; that’s just how it is,” said Dimitrov. “I came into the match very focused and extremely clear what I had to do.
“Sometimes simplicity is genius. It’s very, very hard to do it, especially when you play against an opponent like that, but I was really able to dictate the game, read the game a little bit better than last time.
“Overall, I think a very great match on my end and I’m just happy I finished in straight sets.”
Zverev ended unseeded Fabian Marozsan’s run with a 6-3 7-5 success.
The Hungarian had beaten top 10 pair Holger Rune and Alex de Minaur to reach the last eight, but could only muster two break points as Zverev won 80 per cent of points on his first serve.
“I’m happy to be back in these late stages of these tournaments, playing the best players in the world, I think there are only those left,” said Zverev, who reached the final in Miami in 2018.
Defending champion Daniil Medvedev will meet Jannik Sinner in the other semi-final in a rematch of the Australian Open final.
Andy Murray revealed he may play alongside brother Jamie in the men's doubles at Wimbledon, with the pair to make a decision "in the next few days".
Murray and Dan Evans fell at the first hurdle of the men's doubles at the French Open on Friday, as the British duo were defeated 7-6 (8-6) and 7-6 (7-3) by Thiago Seyboth Wild and Sebastian Baez.
It was expected to be the three-time grand slam singles champion's final appearance at Roland-Garros, after he revealed in February that he does not "plan on playing much past this summer".
Murray, who was beaten by Stan Wawrinka in the opening round of the men's singles, now turns his attention to the grass-court season, which "may" include a familiar partnership at Wimbledon with brother Jamie - a two-time mixed doubles champion at SW19.
The brothers have also played together at two Olympics - in 2008 and 2016 - while their prolific partnership helped inspire Great Britain to Davis Cup glory in 2015.
"My brother doesn't have a partner for Wimbledon currently," said the 37-year-old, who last played in the men's doubles at SW19 five years ago alongside Pierre-Hugues Herbert.
"We have spoken a little bit about it. So I may do that, but not 100 per cent sure yet. [We will decide] ahead of time. Obviously, Jamie could also get a good partner, as well. We'll see what happens, but we'll probably decide in the next few days."
Murray also reflected on his and Evans' first-round exit at Roland-Garros, where he felt his progress was hampered by an ongoing back problem.
"It's been frustrating for everyone," he added. "I felt like we had a good chance to do well, and we agreed if we were going to play, we would play to try and win the tournament.
"I have been struggling a little bit with my back the last couple of weeks, so I probably needed a few lighter days anyway."
Alcaraz turns on the style to beat Korda at Roland Garros
Carlos Alcaraz dug deep to overcome a spirited performance from Sebastian Korda in the third round of the French Open, claiming a 6-4 7-6 (7-5) 6-3 win.
Korda failed to build on an early break as Alcaraz took the opener on Court Philippe-Chatrier, but he appeared to have the Spaniard on the ropes when he forced a second-set tie-break.
However, the two-time grand slam champion clinched the tie-break with a huge forehand winner and seemed to grow in stature from there, moving well and displaying too much power for his American opponent.
Alcaraz put Korda under pressure from the off in the third set and did not give up a single break point on his own serve, converting the first of two match points with a neat serve and volley.
He will face either Ben Shelton or Felix Auger-Aliassime next, with Stefanos Tsitsipas potentially lurking in the quarter-finals.
Data Debrief: Alcaraz just too good
As was the case against Jesper de Jong in round two, Alcaraz looked to be under serious pressure on Friday, only to step things up and pull away from his opponent.
He has now won 14 of his 17 singles matches at the French Open, with his win ratio of 82.4 per cent the third highest among active male players, after Rafael Nadal (96.6 per cent) and Novak Djokovic (85.3 per cent).
Swiatek celebrates birthday with routine win over Bouzkova
Iga Swiatek marked her 23rd birthday with a straight-sets victory over Marie Bouzkova at the French Open on Friday, maintaining her charge for a third successive Roland-Garros title.
Swiatek was pushed all the way by Naomi Osaka in her second-round match on Wednesday, but she enjoyed a far more serene outing on Court Philippe-Chatrier in the third round.
The world number one raced to a 6-4 6-2 win as Bouzkova struggled to match her heavy-hitting, and she could even afford to surrender one of her two breaks at the tail end of the opener.
Swiatek broke immediately at the start of the second set, setting the tone for a powerful finish to the match, her victory fittingly sealed with a thumping forehand up the line.
She will face Anastasia Potapova next up after the Russian overcame Wang Xinyu in three sets on Friday.
Data Debrief: Perfect celebration for Swiatek
Since the WTA rankings were first published in 1975, only two world number ones have won a match at Roland Garros on their birthday, Justine Henin in 2007 and Swiatek on Friday.
She is also the only player this century to reach the fourth round of the women's draw on each of her first six French Open appearances.
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