'I'm still a little bit shocked': Champion rolled in latest French Open stunner

A minor car crash couldn't sidetrack Coco Gauff before she began her French Open title defence.

It took a player who could match the American's court coverage in long baseline rallies to mark the end of the road for Gauff in Paris.

That player was Anastasia Potapova, who produced a 4-6, 7-6 (1), 6-4 victory over Gauff in the third round on Sunday (AEST).

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"She was able to finish the points and I wasn't. Just not capitalising on certain shots," Gauff said.

The 30th-ranked Potapova, who was born in Russia but now represents Austria, improved to 3-2 in her career against Gauff.

She's having quite a clay season after reaching a final in Linz, Austria, and the semi-finals of the Madrid Open as a qualifier.

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"I'm still a little bit shocked, but obviously, yes, I'm super happy," Potapova told Stan Sport's Chris Stubbs.

"It's one of the best wins I've ever had in my career so far, and yeah, it's just everything about it, do it at a Grand Slam against a champion from the last year, makes it so special.

"My Instagram is blowing up and also all the friends, all the family members, they're all texting. I try not to really focus on social media because I think it's time now to recover, just to keep it quiet for yourself and just to only answer to my family members and friends."

For the seventh straight day of the tournament, it was hot and humid, with the temperature rising to 34 degrees.

Potapova struggled with cramp in her arm.

"I mean everything is fine now," she said.

"I think it's just the tension and that's been going on since we started. I started to feel a little bit of a cramp in the middle of the third set but I tried to set up my mind on not letting this ruin this.

"So I felt strong in my head to not let it happen during the match, but I guess when I won and it all finished, I guess my body just fully relaxed, and that's where it all happened.

"I mean it's OK. It's part of the game, it's part of having a physical matches, and it's also, I think, beautiful."

The match was played before mostly empty stands inside Court Philippe-Chatrier as French fans stayed away to watch the Champions League final.

Gauff's second Grand Slam title came with a victory over top-ranked Aryna Sabalenka in the final at Roland Garros a year ago.

Before her opening victory over Taylor Townsend on Tuesday, Gauff was involved in a car accident on the way to the tournament grounds. She wasn't injured, but the car wasn't drivable anymore.

The fourth-ranked Gauff was coming off a run to the Italian Open final. She was beaten in Rome by Elina Svitolina - another player who can match her on long rallies.

"I lost the same way in Rome as I did here," Gauff said. "You never want to lose the same way back-to-back times."

When Gauff shanked a forehand wide on Potapova's first match point, Potapova fell on her back and covered her eyes as she stuck her feet up in the air in celebration. Gauff waved to the crowd and quickly walked off court when it was finished.

"Coco is such a champion. I respect her so much," Potapova said. "I've been fighting for the last point and here I am."

It wasn't a matter of mistakes for Gauff - she hit three double-faults to her opponent's eight and had 46 unforced errors to Potapova's 56. It was more that Potapova controlled more in the longer rallies and wore Gauff out.

Gauff ran a total of 2309m to Potapova's 2090.

Earlier, Naomi Osaka beat 18-year-old American opponent Iva Jovic 7-6 (5), 6-7 (3), 6-4 after nearly three hours - in her 100th Grand Slam match - to set up a round-of-16 meeting with top-ranked Aryna Sabalenka.

Sabalenka beat Australia's Daria Kasatkina 6-0, 7-5.

For her second-straight match, Osaka wore a metallic gold bomber jacket over a sequined gold playing dress during her walk-on. But this time, her outfit was offset by a tannish-gold coloured train that stretched all the way down to the red clay on Court Suzanne-Lenglen.

"It's a surprise every time," Osaka said of her fashion choices.

"For me, it would be weirder to wear a normal tennis kit, almost, at this point. It's the fun of it. For a long time, I didn't have fun for a little bit. And you guys know that period of time in my life," Osaka added, referring to how in 2021 she withdrew from the French Open because of issues with anxiety and depression. "Now I just want things to be fun, and I want to make it exciting for myself."

Osaka's outfits are planned a year and a half in advance and require at least four fittings.

"We have so many fittings throughout the year because your weight can fluctuate or the fabric can change a little bit," she said. "There is a lot of effort that goes into it."

Midway through Osaka's victory, a spectator was carried out of the stadium on a stretcher because of an apparent illness.

In men's action, Alejandro Tabilo ended the run of 17-year-old Frenchman Moise Kouame with a 4-6, 6-3, 6-4, 7-6 (9) victory.

Juan Manuel Cerundolo followed up his stunning victory over top-ranked Jannik Sinner with another five-set victory, beating Martin Landaluce 6-4, 6-7 (7), 7-6 (4), 6-7 (4), 7-6 (8) in 5 hours, 58 minutes - the longest French Open match in six years.

Cerundolo will next meet 2021 Wimbledon finalist Matteo Berrettini, who required 5 hours, 13 minutes to defeat Francisco Comesana 7-6 (3), 5-7, 6-7 (4), 6-4, 7-6 (13).

Flavio Cobolli beat Learner Tien 6-2, 6-2, 6-3 and will next meet unsung American Zachary Svajda, who defeated Francisco Cerundolo 6-3, 6-4, 3-6, 4-6, 6-3.