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A Promising Start Turns Unexpected
First seen leading right from the beginning, Jannik Sinner showed up at the 2026 French Open seeming unstoppable – only to fall short sooner than expected, exiting in the second round. Holding the top ranking didn’t help him push beyond that stage.
Late May brought a match on Tuesday, Jannin Sinner facing Juan Manuel Cerúndulo from Argentina. Sharp from the very first point was the Italian, aged twenty-four. Thirty wins behind him, he flowed through set one, followed by set two without pause. Five games to one led into the third, his movements now edged with quiet certainty. A clear victory appeared close at hand when the final frames approached.
Heat and Fatigue Shift How Play Unfolds
Without warning, the match changed as the temperature began pressing down on Sinner. When the sun pushed past eighty-nine degrees, moving smoothly grew tougher. The thick atmosphere dragged his steps lower.
He started strong yet suddenly lost his rhythm after missing eighteen consecutive points. A call for the trainer came next. Though he returned to play, moving seemed harder than it had earlier.
Down he bent once more, pace dipped with every step, the weight of each exchange pulling harder on what little stamina remained.

Breath jagged now, timing frayed like worn thread, gaps widening where motion used to flow. Yet forward he pressed, body coiled against strain, feet stumbling where they once snapped. Weariness etched itself into his frame, slow blinks giving away legs gone heavy. A stumble here, a hitch there – limbs dragging behind thought.
From Control to Collapse
Frosty towels plus a small fan failed to bring back his flow. A match dropped, soon after another – three sets vanished, then the entire battle dissolved into silence.
Strange, really – just when it seemed done, up pops Cerúndolo, snatching what looked like Sinner’s for the taking. Afterward, Cerúndolo said: “I feel sorry for him because he deserved to win, I’m not sure what happened, but he was playing very well before that.”
Sinner Ponders Defeat
Out of breath by the end, Sinner said his stamina shaped how things turned out, when he said: “I didn’t feel well on court, I was in a good position, especially in the third set, but I couldn’t finish it.”
Back on his feet, though unsteady, every step felt heavier than it should. Each morning brought less power, making progress harder by the hour.

He moved through days that didn’t fit right, like clothes too tight after sickness. Simple things asked for extra time, extra breath, something he couldn’t give easily anymore. Sinner explained how he feel when he said: “I started to feel very dizzy and had very little energy, I tried to push through, but it became harder as the match went on.”
More Than Just Weather
Heat might have mattered, yet Sinner said that didn’t matter most. Though conditions were tough, he pointed elsewhere for his struggles. “It was warm, but not extreme,” he noted. “It wasn’t about the weather – it was just one of those days where I wasn’t at my best.”
Before the fortnight was up, Sinner stumbled early. Ranked number one but gone quicker than any favorite in decades – no top seed had exited this way at Roland Garros since the last century closed. Cerúndolo never stood a chance on paper – still, he walked away with a shock triumph few saw coming.

A Changing Tournament Landscape
With Sinner gone and Alcaraz sidelined by injury, the door is open. For once in recent memory, neither favorite will claim the title. Alone at the top for now, Novak Djokovic owns the latest Grand Slam title while fresh faces climb further through the rounds. With rivals closing in, nobody brings the momentum of a big win so recently behind them.
Sinner’s Personal Life

Out beyond the matches, talk of Sinner’s private world slipped into view. During an event last season, mention came up – Laila Hasanovic near him, always steady. Tough days? She stays close, he shared. A modeling job keeps her busy, though glimpses of them appear now and then in quiet ways.
One moment everything was under control, then Sinner revealed how quickly momentum shifts at the top. Starting sharp gave him early ground, yet as his stamina slipped, so did the certainty of victory – suddenly turning triumph into surprise defeat. Even number one means little once physical limits hit during play.