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Sinner Crashes Out of French Open in Second Round: World No. 1 Falls to Cerundolo After Leading 6-3, 6-2, 5-1

Jannik Sinner is out of the French Open.
The world No. 1, on a 30-match winning streak and the heaviest favorite for the men's title since Rafael Nadal in 2009, lost Thursday afternoon in the second round. He was beaten by Argentine world No. 56 Juan Manuel Cerundolo, 3-6, 2-6, 7-5, 6-1, 6-1, in three hours and 31 minutes.
The match took place on Court Philippe-Chatrier in Paris heat peaking at 34°C (roughly 93°F). Sinner was four points from winning when the collapse began.
What Happened on Court
Sinner opened the match in dominant form. He dropped just eight games in his first-round win over Clement Tabur on Tuesday. Against Cerundolo, he looked even better — racing to 6-3, 6-2, and then 5-1 in the third set.
Then Sinner lost 24 of the next 27 points. He was visibly laboring, called for the trainer, and was overheard courtside saying he felt "dizzy" and "wanted to vomit." He took a mid-game medical timeout but could not recover. Cerundolo stayed composed and won the final two sets 6-1, 6-1.
This is the first time since the 2023 French Open that Sinner has failed to reach the second week of a major.
Sinner's Explanation
In his post-match press conference, Sinner said he did not blame the heat.
"I had no energy today. That can happen. Nobody is a robot," Sinner said. "I woke up this morning, didn't feel very well. It was warm, but not crazy warm. Really it was nothing against the heat, nothing against the weather. It was just me today."
Questions about Sinner's physical durability in extended matches and high heat have followed him throughout his career. At the 2026 Australian Open, Sinner cramped badly in temperatures approaching 40°C and benefited when the heat rule forced the roof to close during his third-round match against Eliot Spizzirri. At the October 2025 Shanghai Masters, he retired against Tallon Griekspoor due to full-body cramps in high heat and humidity.
The Draw Widens
With Sinner out and Alcaraz already gone due to a wrist injury, this is a genuinely open draw. The two players had dominated men's Grand Slam tennis in recent years.
Novak Djokovic, the third seed, now has a cleaner path. He faces Brazilian teenager João Fonseca on Friday in the day session, with temperatures again expected to hit 34°C.
Alexander Zverev, Casper Ruud, and others in the draw will also be calculating their odds differently today than they were 24 hours ago.