TOP-RANKED Jannik Sinner got his Wimbledon “warm-up” out of the way by beating Cameron Norrie 6-3, 6-3 in an exhibition match amid a heatwave today.

It came just under a month after the Italian star struggled with dizziness in a stunning second-round loss at the French Open.

Sinner, preparing to defend his Wimbledon title when the grass-court Grand Slam starts on Monday, took part in the Hurlingham Tennis Classic with southern England under a red warning for extreme heat issued by Britain’s national weather service.

“As Cam said, a very hot day,” Sinner said in an on-court interview. “Exhibition matches, they are good because we try out a couple of things and hopefully be as good as we can then for the next week.”

The interviewer asked him what he was trying out. “I don’t know,” a smiling Sinner responded.

Earlier today at the All England Club, Sinner wore a cooling vest at practice. During the match against Norrie, he didn’t use ice packs like in the past.

The early afternoon temperature in Fulham, where the grass-court event was held, was 33°C with a slight breeze.

In Paris, he was ahead by two sets and 5-1 in the third before losing to Juan Manuel Cerundolo 3-6, 2-6, 7-5, 6-1, 6-1. The temperature on Court Philippe-Chatrier rose to 32°C during the match, and Sinner was clearly having a tough time cooling himself down as he reached for multiple ice bags.

Sinner, who has a history of problems with heat and cramps, didn’t blame the heat entirely after the loss. “I think many things together caused this problem. I just need my time now to process what went wrong here,” he said.

At the grass-court major a year ago, Sinner beat Carlos Alcaraz 4-6, 6-4, 6-4, 6-4 in the final for his first Wimbledon title. Alcaraz will miss this year’s tournament because of a wrist injury.

Britain’s weather service said in its warning to “keep out of the sun and avoid any exercise between 11 am-3 pm when the sun is strongest.”

It said the region could see “a two to three-day period where maximum temperatures in the shade exceed 37°C, perhaps rising to 38 to 40°C in some places. The heat will be accompanied by high humidity, exacerbating the potential for discomfort and health impacts, with very warm and humid night times also reducing the ability for people to recover overnight.”

The temperature at Wimbledon on Monday is expected to be slightly milder at 24°C.