World No. 1 Jannik Sinner lost to 56th-ranked Juan Manuel Cerúndolo in the second round of the French Open [1, 2].
The upset removes the tournament favorite from the competition and opens the draw for other contenders at Roland Garros. Sinner entered the match as the top seed and the primary challenger for the title [1].
The defeat followed a sudden physical crisis for the Italian player. Sinner suffered a dizzy spell and heat-related illness that caused him to collapse during the match [1, 2, 3]. The medical incident occurred after Sinner had established a dominant lead, holding a score of 6-3, 6-2, 5-1 before the collapse [3].
Cerúndolo, ranked 56 in the world [1], took advantage of the situation to secure the victory. The match took place in Paris, France, where high temperatures often impact player performance on the clay courts of Roland Garros [1, 2].
Reports of the incident surfaced on May 29, 2026 [1]. The loss marks a rare early exit for Sinner, who has maintained the top global ranking through consistent performance across the tour [1]. While the exact nature of the illness was described as a dizzy spell or heat-related, the impact was immediate and decisive, shifting the momentum of the match entirely.
Sinner's departure from the tournament comes as a significant blow to his campaign for the season. The collapse during the second round serves as a reminder of the physical toll the French Open environment can take on athletes [2, 3].
“World No. 1 Jannik Sinner lost to 56th-ranked Juan Manuel Cerúndolo”
Sinner's early exit creates a power vacuum in the men's singles draw, significantly increasing the odds for lower-seeded players and other top contenders to reach the final. The nature of the loss, attributed to health and environmental factors rather than a tactical defeat, suggests that physical endurance and heat management will be critical themes for the remainder of the 2026 French Open.
