LONDON - World No 1 Jannik Sinner held off defending champion Carlos Alcaraz 4-6, 6-4, 6-4, 6-4 to win his first Wimbledon title on Sunday.

The top seed avenged his heartbreaking French Open loss to Alcaraz five weeks ago with a commanding performance, breaking the second-seeded Spaniard once in each set to secure his fourth Grand Slam title.

After failing to convert three championship points in the fourth set of the French Open final, Sinner made no mistake this time. Facing a similar scenario at Wimbledon, he sealed the match on his second championship point with a thunderous serve.

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The Italian downplayed his win, saying he had benefited from fine margins.

"The differences are very small, and the margins are very tiny. Today I felt like that I got lucky couple of times. I know hitting some lines. The things what went his way in Paris went my way this time," he said.

Sinner acknowledged the difficulty of bouncing back from his Paris defeat.

"Only me and the people who are close to me know exactly what we have been through on and off the court, and it has been everything except easy," he said.

"I did a lot of intensity in every practice because I felt like that I could play very good. That's why I also said after Roland Garros that it's not the time to put me down, because another Grand Slam is coming up, and I did great here," he added.

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Alcaraz said he wasn't surprised by Sinner's turnaround.

"He didn't surprise me at all because I know he's a really nice player and a huge champion. Champions learn from the - I'm not going to say fearless - but they learn from the loses," he said.

"I knew at the beginning that he was going to learn from that final, not going to make the same mistakes as they did in the French Open final," he said.