French Open debutant Peyton Stearns produced the biggest win of her career by defeating former champion Jelena Ostapenko to reach the third round at Roland Garros on Wednesday.

Stearns, a former player at the University of Texas, only turned professional in June last year. Ostapenko won the 2017 French Open but has since failed to advance past the 3rd round. The 17th-seeded Latvian dropped her serve five times against Stearns and hit 28 unforced errors in her 6-3, 1-6, 6-2 loss.