American Jessica Pegula, the world No. 3-ranked woman, lost to world No. 361 Lois Boisson in a shock French Open upset Monday. Boisson electrified the local crowd as she advanced to the quarterfinals,

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.

Coco Gauff of the U.S. celebrates as she won the fourth round match of the French Tennis Open against Russia's Ekaterina Alexandrova at the Roland-Garros stadium in Paris, Monday, June 2, 2025. Credit: AP/Thibault Camus The crowd broke into chants of “Loïs, Loïs" and she waved back to them.