World number 361 Lois Boisson pulled off the biggest shock of this year’s French Open with a stunning fourth-round victory against third seed Jessica Pegula.
The French player, given a wildcard into the main draw after tearing an anterior cruciate ligament in her knee last year, came through 3-6 6-4 6-4 against the US Open runner-up.
Boisson is making her debut in the main draw of a Grand Slam and had never played an opponent ranked in the world’s top 50 before this week.
The 22-year-old had to stave off four break points as she served for the match at 5-4 in the third set before sealing victory with a thumping forehand winner.
Boisson was serenaded by chants of “Lois!” from the packed crowd on Court Philippe Chatrier as the moment sank in.
“I’m not sure what to say. Playing on this court, with this atmosphere, was amazing,” she said.
“I gave my all and in the end I won, which is just incredible. I hope I’m going to win it all!”
She will play sixth seed Mirra Andreeva for a place in the semi-finals in Paris.
She is also the lowest-ranked player to reach a major quarter-final since world number 418 Kaia Kanepi at the 2017 US Open.
