French Teen Moise Kouame Makes History With Shock Win Over Marin Cilic

17-Year-Old Moise Kouame Shocks Marin Cilic On Grand Slam Debut

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.

Sahir Usman

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