Moise Kouame stuns Marin Cilic, becomes youngest Grand Slam match winner in 17 years

French teenager Moise Kouame delivered one of the biggest surprises of the 2026 French Open after defeating former US Open champion Marin Cilic in his Grand Slam debut. The 17-year-old wildcard secured an impressive 7-6(4), 6-2, 6-1 victory at Roland Garros and became the youngest male player in 17 years to win a Grand Slam main-draw match.

Kouame shocks former Grand Slam champion

Playing in front of an energetic home crowd, Kouame showed remarkable confidence against the experienced Cilic, who won the 2014 US Open and was once ranked world No. 3. The French youngster held his nerve in a tense opening set, saving crucial points before winning the tiebreak.

After taking the first set, Kouame completely controlled the match with aggressive groundstrokes, smart shot selection and excellent movement around the court. Cilic struggled to match the teenager’s pace and consistency as the French player raced through the final two sets.

The win also made Kouame the youngest Frenchman to reach the second round at Roland Garros in more than three decades. Ranked outside the top 300 before the tournament, the teenager produced one of the standout performances of the opening round.

French tennis finds a rising star

Kouame has already been considered one of the brightest young talents in French tennis. Earlier this season, he earned his first ATP Tour-level win and collected valuable experience on the professional circuit.

The teenager has trained under the guidance of former French star Richard Gasquet and is widely seen as a future prospect for the country. His calm approach and fearless style at Roland Garros have quickly attracted attention from tennis fans and experts.

With this memorable victory, Kouame has announced himself on the biggest stage in tennis. He will now face Paraguay’s Adolfo Daniel Vallejo in the second round as he aims to continue his dream run at the French Open.