Loïs Boisson had never even played at the French Open before, let alone on the biggest court at Roland-Garros.

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,

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