French Open: Jannik Sinner upset by Juan Manuel Cerundolo after being granted controversial cramping timeout

World No. 1 Jannik Sinner was upset by Juan Manuel Cerundolo at the 2026 French Open on May 28, losing in five sets (3-6, 2-6, 7-5, 6-1, 6-1). Sinner had won the first two sets and led 5-1 in the third before losing 15 consecutive points, after which he took a controversial medical timeout for cramping. The timeout proved to be a turning point, as Cerundolo won the final three sets to eliminate the top seed in the second round.