Fourth seed Djokovic, quite simply, was not himself in an error-strewn quarter-final against Musetti, conceding that he had been on his way home until the fifth seed broke down. Sinner's 2024 semi-final win over Djokovic at Melbourne Park proved a watershed for the Italian, who has since split all the Grand Slam trophies with Alcaraz. Having already shattered the Serb's aura at his most bankable Grand Slam, another win for Sinner could set him up for a Djokovic-esque reign at Melbourne Park. The 22-year-old Spaniard suffered a shock quarter-final loss to Djokovic last year at Melbourne Park but has taken his game to new levels since. Two years on, though, Alcaraz is on a higher plane, a six-times Grand Slam champion at the age of 22 eyeing a chance to become the youngest player to complete the career Grand Slam.