Jannik Sinner celebrated at the All England Club on Sunday after defeating Germany's Alexander Zverev to successfully defend his Wimbledon singles title. Photo: AFP

Jannik Sinner said he still considers winning Grand Slam tournaments a "very, very rare" achievement, despite securing his fifth Major title on Sunday by defending his Wimbledon crown.

The world No 1 outlasted Alexander Zverev in a bruising encounter 6-7 (7/9), 7-6 (7/2), 6-3, 6-4 in the final at the All England Club. It was Sinner's first Slam triumph since winning his maiden Wimbledon title 12 months ago, despite reeling off a remarkable six consecutive Masters 1 000 tournament victories.

"There is no failure if you don't win a Grand Slam," Sinner said, after the match. "It's very, very rare days.

"Now I have five in my whole life. We talk about five Grand Slams. But at the end of the day, it's five days of so many other days. You just want to enjoy it.