Alex de Minaur's Australian Open fourth-round opponent Alex Michelsen has a hip injury he received a medical timeout for in his previous match.

Alex de Minaur, the world No. 8, and Nick Kyrgios, who is back after a two-year battle with knee and wrist injuries, are the headliners for their country at Melbourne Park. Kyrgios emceed the night session on John Cain Arena Monday, before De Minaur headlines Rod Laver Arena, the pantheon of Australian tennis Tuesday night.

Alex de Minaur busted through his Australian Open fourth-round ceiling with a brutal display against Alex Michelsen. Now, a date with world No. 1 Jannik Sinner looms.

Alex de Minaur has responded to Lleyton Hewitt's shock decision to call up Nick Kyrgios to Australia's Davis Cup team, but his participation and availability for the Australian Open was thrown into huge doubt on Wednesday.

Alex de Minaur broke new ground at the Australian Open on Monday, reaching the quarter-final of his home Grand Slam for the first time. The eighth seed’s run in Melbourne completes the ‘last eight’ set for the 25-year-old,

Alex de Minaur has reached the Australian Open quarter-finals for the first time, setting up an epic last-eight match with world no.1 and reigning champion Jannik Sinner.