French wild card Lois Boisson produced a stunning upset at the Roland Garros on Monday, ousting American world No. 3 Jessica Pegula in a thrilling 3-6, 6-4, 6-4 victory.

Lois Boisson +5.5 games (-130 at FanDuel) Boisson has been riding a historic wave of momentum in this event, using support from the home crowd to disrupt her opponents. She has knocked off back-to ...

France's Lois Boisson plays a shot against Russia's Mirra Andreeva during their quarterfinal match of the French Tennis Open at the Roland-Garros stadium in Paris, Wednesday, June 4, 2025.

Lois Boisson, who came into the French Open ranked No. 361 in the world, reached the semifinals on Wednesday after a 7-6, 6-3 upset of No. 6 seed Mirra Andreeva. That was Boisson’s second straight ...

Lois Boisson celebrates her comeback win against world No. 3 Jessica Pegula in the round of 16 at Roland Garros. - Alain Jocard/AFP/Getty Images ...

Boisson, 22, is the first woman to reach the semifinals in her Grand Slam debut since 1989, when Monica Seles and Jennifer Capriati both did it at the French Open.

Coco Gauff of the U.S. reacts as she plays against France's Lois Boisson during their semifinal match of the French Tennis Open at the Roland-Garros stadium in Paris, Thursday, June 5, 2025.

Coco Gauff of the U.S. celebrates as she won the semifinal match of the French Tennis Open against France's Lois Boisson at the Roland-Garros stadium in Paris, Thursday, June 5, 2025.

France's Lois Boisson plays a shot against Russia's Mirra Andreeva during their quarterfinal match of the French Tennis Open at the Roland-Garros stadium in Paris, Wednesday, June 4, 2025.

The Frenchwoman entered Roland Garros as a wild card. She’s currently ranked No. 361 in the world. And on Monday, Boisson came back from a set down to beat world No. 3 Jessica Pegula to reach ...