Champion Sinner wary of Zverev before Wimbledon final - Published Recent history suggests Jannik Sinner should be entirely confident of retaining his Wimbledon title - but this Alexander Zverev is a different proposition. World number one Sinner is aiming to become just the 10th man in the Open era to retain the men's singles title at the All England Club, after beating Carlos Alcaraz to lift the ...