Jannik Sinner Suffers Shocking Second Round French Open Defeat

The Italian won the first two sets against Juan Manuel Cerundolo of Argentina, but then appeared to be struggling physically. ‘I kind of hit the wall,’ he said.

Italy's Jannik Sinner plays a shot against Kazakhstan's Alexander Bublik during their quarterfinal match of the French Open at Roland-Garros Stadium in Paris on June 4, 2025. Aurelien Morissard/AP Photo

Italian Jannik Sinner, tennis world No. 1, suffered a shocking second-round defeat in the French Open on May 28 against world No. 56, Juan Manuel Cerundolo of Argentina. 

The 6-3, 6-2, 5-7, 1-6, 1-6 loss came after a heatwave came over Court Philippe-Chatrier in Paris, and Sinner appeared to be struggling physically, though he didn’t blame the heat after the match.