French Open: French wildcard Lois Boisson has etched her name into Grand Slam folklore with a jaw-dropping fourth-round upset at Roland Garros 2025. In only her second tour-level event and Grand Slam main-draw debut, the 22-year-old stunned World No. 3 Jessica Pegula 3-6, 6-4, 6-4 on a stirring Monday afternoon at Court Philippe-Chatrier.
Boisson, ranked No. 361, became the lowest-ranked woman to reach a Grand Slam quarterfinal in eight years — since Kaia Kanepi’s 2017 US Open run. The home crowd watched in rapt disbelief as the young Frenchwoman, battling back from an ACL injury just a year ago, delivered a composed, courageous, and calculated performance to take down one of the WTA’s most consistent forces.
The first set went Pegula’s way, as the American’s trademark discipline and timing wore down the Grand Slam debutante. But Boisson, armed with a topspin-heavy forehand and tactical nous that belied her inexperience, fought fire with fire. Using the heaviest forehand topspin among all remaining women in the draw, she dragged Pegula into deep baseline exchanges that increasingly tilted in her favour.