DOWN GOES SINNER! ….Roland Garros will crown a first-time men’s grand slam winner.

He was up two sets and serving for the match. Then Paris got hot.

Jannik Sinner — world No. 1, on a 30-match winning streak, with Alcaraz sidelined by injury — had Roland Garros gift-wrapped for him. The one Grand Slam missing from his collection. No rival standing in the way. And he was cruising, up 6-3, 6-2, 5-1 on Court Philippe-Chatrier… until his body said no.

World No. 56 Juan Manuel Cerúndolo came back from two sets down to beat the top seed 3-6, 2-6, 7-5, 6-1, 6-1 in one of the biggest upsets in Roland Garros history. The first time a men’s No. 1 seed has lost before the third round here since Andre Agassi in 2000. The career Grand Slam dream? On hold again.

We break down what actually happened on that court — the heat, the dizziness, the collapse from 5-1 up in the third — and ask the harder question: is this a brutal bad day, or does Sinner have a Paris problem?

Want me to tweak the tone, punch up the opening hook, or adjust the length?