French 17-year-old Moise Kouame defeated former US Open champion Marin Cilic 7-6(4), 6-2, 6-1 in the first round of the 2026 French Open on May 26, becoming the youngest male to win a Grand Slam main-draw match in 17 years [1, 2, 3, 4, 5, 6, 7, 8]. Kouame, ranked 318th in the world, entered the tournament on a wildcard and is coached by former French player Richard Gasquet [1, 2, 4, 5, 8].

At 17 years and two months old, Kouame is the youngest male Grand Slam match winner since Bernard Tomic at the 2009 Australian Open, and the youngest to advance past the first round at Roland Garros since Dinu Pescariu in 1991 [1, 2, 4, 5, 6, 7, 8]. Known for a strong serve that can reach 139 mph and a versatile style earning him the nickname "KTT" for 'Kouame every surface,' he impressed crowds in Paris with his composure [3, 8].

Kouame credited the support of the home crowd for helping him handle the pressure. "I love this sport, because we get those kinds of atmospheres and for the pressure that you experience. I was playing in front of 10,000 people, right? It’s not easy, that’s for sure, but I was able to draw into their energy because they were there to support me, not to stress me," he said [9]. He added, "It wasn’t easy. I always try to stay in the present moment and not think too much about the score. Today I managed to do that really well" [1].

In the second round on May 27, Kouame defeated Paraguay's Adolfo Daniel Vallejo in a nearly five-hour thriller lasting 4 hours 56 minutes. He won 6-3, 7-5, 3-6, 2-6, 7-6(8) to reach the third round [10, 11, 12, 9]. Vallejo had advanced after 20th seed Cameron Norrie retired injured before their scheduled match [1, 2, 4, 5, 6].

Kouame is the youngest man to reach a Grand Slam third round since Rafael Nadal in 2003, a milestone confirmed on May 28 [12, 9]. Born in Sarcelles, France, in 2009 to Ivorian-Cameroonian parents, Kouame started tennis at age six, initially coached by his mother [8]. He has won three ITF titles and received wildcards for ATP Masters events including Miami and Monte Carlo earlier this year [1, 2, 4, 5, 8].

Kouame faces Chilean Alejandro Tabilo, ranked 36th, in the third round [10, 11]. Reflecting on his ambitions, Kouame said, "Winning Roland Garros is, of course, a dream, but winning all four (Slams) is a dream actually, you know. Being world number one is also a dream. I think thinking about winning the tournament is a bit early" [9].