Jannik Sinner can now literally say he's left his blood, sweat and tears on Centre Court at the All-England Club.
A year after his teary-eyed triumph over Carlos Alcaraz for the first Wimbledon title of his career, Sinner began his defense of the championship on Centre Court against Serbian Miomir Kecmanović, the world No. 50 who proved to be a tougher opponent than the Italian could have bargained for in the opening round.
