Alex de Minaur admits he faces a "battle" to progress to the fourth round of the Australian Open on Saturday, despite Novak Djokovic predicting big things from the home favourite at Melbourne Park. De Minaur is yet to drop a set at his home slam but faces his sternest test yet in a third round clash against Argentina's World No.

Djokovic’s four-set victory over his young rival sets up a semifinal with second-seeded Alexander Zverev and keeps alive his hope of a record 25th Grand Slam title.