Argentina’s Juan Manuel Cerundolo caused a major upset at the French Open by defeating World No.1 Jannik Sinner in a thrilling second-round match at Stade Roland Garros in Paris. Sinner, who was on the verge of victory leading 5-1 in the third set, struggled with cramps, allowing Cerundolo to stage a remarkable comeback.
Cerundolo, ranked World No. 56, capitalized on Sinner’s physical struggles to win 18 of the final 20 games, securing the biggest upset of the 2026 season. Sinner, aiming to complete the Career Grand Slam and riding a 30-match winning streak, was unable to maintain his form due to physical limitations.
Reflecting on the match, Cerundolo expressed sympathy for Sinner, acknowledging the Italian’s deserving performance. Sinner’s unexpected defeat opens up the field at Roland Garros, with Cerundolo set to face either Martin Landaluce or Vit Kopriva in the next round.
The loss marks another disappointing chapter for Sinner at Roland Garros, following his near-miss in the previous year’s final. With Sinner out of the tournament and Alcaraz sidelined, a new champion could emerge at the event for the first time since 2024.
