Jannik Sinner ramped up training for Wimbledon title defense

LONDON -- Jannik Sinner said he changed his physical workload after his French Open meltdown, when he felt ill and dizzy in a second-round loss.

So he's taking it a bit easier? Wrong.

"Much longer sessions -- both in the gym and on the court," he said. "We did everything together but without any breaks.... Now we'll see how I react on the court."

Sinner spoke Saturday -- in English and Italian -- at Wimbledon as he prepares to defend his singles title. He opens against Miomir Kecmanovic on Centre Court on Monday, when the temperature is expected to be 77 degrees.