Paris — Jannik Sinner’s pursuit of a career Grand Slam suffered a setback following his unexpected defeat in the second round at the French Open on Thursday afternoon. The world No. 1 faced Argentine player Juan Manuel Cerúndolo, ranked 56th globally, and lost in five sets: 3-6, 2-6, 7-5, 6-1, 6-1.
The Match Dynamics
Sinner entered the match with a 30-game winning streak, with victory seeming within reach until heat became his adversary. As the intense conditions unfolded, it became apparent that the real challenge for Sinner wasn’t from any competitor, but from the sweltering conditions, similar to previous tournaments.
Melbourne’s heat almost ended his journey at the Australian Open, as well as causing full-body cramps at the Shanghai Masters.
At the French Open, without an indoor option and with temperatures nearing 90 degrees, Sinner struggled under the sun. What looked like a straightforward match turned dramatically at 5-2 in the third set. Leading convincingly, Sinner was a game away from victory but then lost 18 consecutive points due to fatigue setting in.
Sinner was permitted to leave the court for treatment, claiming dizziness rather than cramps, but upon returning, couldn’t regain momentum. Cerúndolo capitalized on the situation, capturing the third set to make it 2-1. Sinner took a break but failed to find a solution to the heat’s effect.
Turning the Tide
Cerúndolo showed remarkable focus throughout the fourth set, overcoming break points and maintaining an impressive defense. He eventually took the set 6-1, dominating the weary opponent. The final set unfolded similarly, with Cerúndolo having absorbed Sinner’s initial aggression.
Leading 4-0, Cerúndolo held steady against break points and concluded the match quickly, marking a shocking defeat for the top seed. This loss signaled a wide-open field for the French Open, previously dominated by expectations surrounding Sinner’s potential triumph.
Implications and Reflections
With Carlos Alcaraz, the defending champion, also out, the French Open lacks a recent major winner, leaving potential victors with only Djokovic having previous Grand Slam experience. Sinner must contend with the ongoing challenge of heat at outdoor tournaments.
Cerúndolo’s victory marks his career-defining moment, advancing him to face either Martin Landaluce from Spain or Czechia’s Vít Kopřiva in the next round.
The defeat reflects a recurring challenge for Sinner, who experienced a similar high-pressure loss at last year’s tournament against Alcaraz.

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