World No. 1 Jannik Sinner is out of the French Open after a stunning second-round defeat against world No. 56 Juan Manuel Cerundolo. The final score settled at 3-6, 2-6, 7-5, 6-1, 6-1 in favor of the Argentine. Sinner looked completely safe with a two-set lead and a 5-1 advantage in the third set before his physical condition completely fell apart in the suffocating Paris weather.
The match turned into a nightmare as temperatures at Roland Garros soared from 29°C (84°F) to a punishing 33°C (91°F). Sinner ran out of gas entirely, losing 18 consecutive points at one stage while trying to secure the straight-sets win. He had to leave the court to get his blood pressure checked and relied heavily on ice packs during changeovers, but he could barely move during the final two sets of the match.
Before this disaster, the top seed was riding a 30-match winning streak that started back in February. He had just matched Novak Djokovic by winning all nine ATP Masters 1000 titles, making this one of the biggest turnarounds in tennis history. This physical struggle echoes other grueling matches this season, like when Rafa Jódar set a 2026 ATP record during a late-night battle. But Sinner simply had nothing left to give as Cerundolo kept pushing from the baseline.
Cerundolo breaks into the third round with the biggest win of his life, leaving the men’s draw wide open. Defending champion Carlos Alcaraz is already out of the tournament due to a right wrist injury, meaning 39-year-old Novak Djokovic is the only grand slam champion left in the field. Djokovic has already spoken up about the conditions, arguing that tournament officials need to change the match schedules when these intense summer heatwaves roll into Paris.