The reigning Wimbledon champion returns to the All England Club under unusual scrutiny. After months of near-total dominance, Jannik Sinner arrives with an air of invincibility that has begun to fade, leaving the world No. 1 eager to prove he can once again dictate play on grass and fend off a chasing pack led by Novak Djokovic.

Sinner looked virtually untouchable during a commanding clay-court season before physical issues derailed his French Open campaign last month, raising fresh questions about whether he can maintain his highest level when the pressure is greatest at Grand Slam tournaments.

Now, the tour's fastest surface offers the 24-year-old a chance to reset. Yet with Sinner opting to skip all grass-court tuneup events ahead of Wimbledon, which begins Monday, rivals will be watching closely for any signs that the Italian remains vulnerable.

Despite the disappointment in Paris, where his 30-match winning streak dating to February came to an end, seven-time Grand Slam champion Mats Wilander believes Sinner remains the player to beat, particularly with Carlos Alcaraz sidelined through injury.

Grass can be tricky, Wilander says