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,

Loïs Boisson is the lowest-ranked woman to beat someone ranked in the top five at the French Open in 40 years.

Prior to Monday, it looked like American women could dominate at the 2025 French Open. Coco Gauff took care of her business early, advancing to the quarterfinals. Jessica Pegula, however, could not get the job done,