Moise Kouame scripted one of the biggest upsets of the 2026 French Open by defeating former US Open champion Marin Cilic 7-6(4), 6-2, 6-1 in his Grand Slam debut at French Open.
The 17-year-old wildcard became the first male player born in 2008 or later to win a Grand Slam match and the youngest Frenchman to win at Roland Garros since 1991. Backed by a passionate home crowd, Kouame displayed fearless shotmaking and composure against the experienced Cilic, converting four break points in a dominant performance.
Ranked No. 318, the Paris-born teenager will next face Adolfo Daniel Vallejo after Britain’s Cameron Norrie withdrew. Kouame’s stunning victory further strengthens his rising reputation on the ATP Tour.