Juan Manuel Cerundolo, a 24-year-old Argentine tennis player, stunned the tennis world by defeating World No. 1 Jannik Sinner in the second round of the 2026 French Open. The match, held at Court Philippe-Chatrier in Paris, lasted three hours and 36 minutes, concluding with a score of 3-6, 2-6, 7-5, 6-1, 6-1. Cerundolo, ranked 56th, was on the brink of defeat, trailing 5-1 in the third set before mounting an incredible comeback. This victory marks his first win against a top 10 player and his first advancement to the third round of a Grand Slam tournament. Cerundolo comes from a tennis family and has been playing since he was three years old. Despite previous struggles at Grand Slams, including a first-round exit in multiple tournaments, his recent performance signifies a promising ascent in his career. He has earned over $2 million in prize money and won the Córdoba Open in 2021, his only ATP title to date. Alongside his singles success, Cerundolo is also competing in men's doubles at the French Open.