World No 6 will instead face Mackenzie McDonald on Monday

Four Australians in first-round action on day one at Melbourne Park

Alex de Minaur has received an early boost to his Australian Open chances after the withdrawal of his tough first-round opponent, former world No 6 Matteo Berrettini.

Berrettini announced he had suffered a recurrence of the abdomen problems which had plagued his 2025 season, forcing him to miss the French and US opens.

“Unfortunately I’ve felt discomfort in my obliques once again and I won’t be ready to perform at my best level for five sets,” the Italian posted on Instagram.