Japanese 27th seed Yoshihito Nishioka edged a dramatic five-set battle with qualifier Thiago Seyboth Wild to reach the French Open fourth round for the first time on Saturday.
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Nishioka battled back to win a heated affair 3-6, 7-6 (10/8), 2-6, 6-4, 6-0 in the Paris sunshine.
The 27-year-old will face either Borna Coric or Tomas Martin Etcheverry for a quarterfinal place.
"This is an amazing feeling... I'm not sure who I want to play next round but hopefully I play my best tennis again and can look forward to the last eight," said Nishioka, who made the last 16 at a Grand Slam tournament for the first time at the Australian Open earlier this year.
World number 172 Seyboth Wild, who stunned second seed Daniil Medvedev in the first round, was left to rue three consecutive missed set points in the second-set tie-break.
The Brazilian led 6-3 in that breaker after a controversial set which saw Nishioka broken after being given a point penalty.
He crossed to the wrong side of the net to angrily dispute a line call which went against him.
Nishioka rallied to win the tie-break and then fought back again after dropping the third set, racing to victory in a one-sided decider.
"He played amazing and he had a chance to win the second set as well," said Nishioka. "If he had, maybe it would have been a different match.
"But at 3-6 down in the tie-break, I never gave up and that's the reason I made the last 16 today."
RUUD ENDS ZHANG DREAM
World No 4 Casper Ruud reached the last 16 with a four-sets win over China's Zhang Zhizhen.
Ruud, the runner-up to Rafael Nadal in 2022, dropped the first set before easing through 4-6, 6-4, 6-1, 6-4 against the world number 71.
Zhang, 26 was bidding to become the first Chinese man since 1936 to reach the fourth round in Paris.
"It was very tough in the first set, he was hitting many winners and I couldn't find a hole in his game," said Ruud.
"At 5-4 in the second set, he played some sloppy shots and that gave me the set, maybe the match," said Ruud who hit 36 winners and saved seven of 10 break points.
Ruud, who was playing in the third round for a fifth successive year, will face either Nicolas Jarry of Chile or Marcos Giron for a place in the quarterfinals.
SIXTH SEED RUNE INTO FOURTH ROUND
Danish rising star Holger Rune eased into the last 16 with a straight-sets victory over Argentinian qualifier Genaro Alberto Olivieri.
The 20-year-old eased to a 6-4, 6-1, 6-3 success on Court Philippe Chatrier to set up a tie with either American ninth seed Taylor Fritz or Argentina's Francisco Cerundolo.
Rune reached the quarterfinals on debut last year before losing a bad-tempered match to Norwegian Casper Ruud and the two will meet at the same stage again if both win their next matches.
Rune is ranked at a career-high sixth after reaching both the Monte Carlo Masters and Italian Open finals on clay this season.
CERUNDOLO DOWNS FRITZ
Francisco Cerundolo reached the second week of a Grand Slam for the first time with a 3-6 6-3 6-4 7-5 win over American ninth seed Taylor Fritz.
The 24-year-old Argentine's first four outings at the majors all ended in first round defeats but this year he has shown improvement.
After a third round showing at the Australian Open, he has now gone one better but dismissed suggestions that he could soon be breaking into the top 10.
"I don't feel like I belong in the top 10 because I'm not even in the top 20," the 23rd seed told reporters.
"I think I'm going to be in the top 20 or probably close to that next week. I'm working to get to that level. I'm closer, but I have to keep going, keep winning and keep improving. So hopefully one day I can be among those top 10 players."
Cerundolo frustrated Fritz with his sharp baseline game to complete victory on Court Suzanne-Lenglen after two hours 50 minutes.
"It was a very tough match. He's a Top 10 player. I knew what kind of match it was going to be," he added.
"The first set was a bit tense. I didn't play well. After that, I started to play better, more aggressive, less mistakes. But, of course, it was a great battle."
Cerundolo, a quarterfinalist at the ATP Masters 1000 events in Miami and Rome this season, will continue his Roland Garros campaign against sixth seed Holger Rune on Monday.
"I played against him in 2019, I think in a Challenger. But now he's a top-10, top-5 guy. He did amazing this last week. Final in Monte Carlo and Rome, title in Munich. He's a great claycourt player, so it's going to be a tough match.
"I hope I can play at the level I've been playing the last few days, because I think I have my chances. I'm going to focus on my game and try to play my best and get the win," he added.
CERUNDOLO DOWNS FRITZ
Francisco Cerundolo reached the second week of a Grand Slam for the first time with a 3-6 6-3 6-4 7-5 win over American ninth seed Taylor Fritz.
The 24-year-old Argentine's first four outings at the majors all ended in first round defeats but this year he has shown improvement.
After a third round showing at the Australian Open, he has now gone one better but dismissed suggestions that he could soon be breaking into the top 10.
"I don't feel like I belong in the top 10 because I'm not even in the top 20," the 23rd seed told reporters.
"I think I'm going to be in the top 20 or probably close to that next week. I'm working to get to that level. I'm closer, but I have to keep going, keep winning and keep improving. So hopefully one day I can be among those top 10 players."
Cerundolo frustrated Fritz with his sharp baseline game to complete victory on Court Suzanne-Lenglen after two hours 50 minutes.
"It was a very tough match. He's a Top 10 player. I knew what kind of match it was going to be," he added.
"The first set was a bit tense. I didn't play well. After that, I started to play better, more aggressive, less mistakes. But, of course, it was a great battle."
Cerundolo, a quarterfinalist at the ATP Masters 1000 events in Miami and Rome this season, will continue his Roland Garros campaign against sixth seed Holger Rune on Monday.
"I played against him in 2019, I think in a Challenger. But now he's a top-10, top-5 guy. He did amazing this last week. Final in Monte Carlo and Rome, title in Munich. He's a great claycourt player, so it's going to be a tough match.
"I hope I can play at the level I've been playing the last few days, because I think I have my chances. I'm going to focus on my game and try to play my best and get the win," he added.