American Danielle Collins is out of the Australian Open following a straight-sets defeat by fellow countrywoman Madison Keys.

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.

Danielle Collins ' spat with the Australian Open crowd continued as she stepped onto Rod Laver Arena for her third-round match on Saturday night. The world No. 11 was booed immeditely while walking onto the court and the crowd continued to give her grief, cheering her errors as she faced Madison Keys.

Jannik Sinner, Iga Swiatek, Taylor Fritz and Alex de Minaur are some of the prominent players who will be in action on the seventh day in Melbourne.

Alex de Minaur is on a collision course with reigning champion Jannik Sinner after his name was called in the same quarter of the Australian Open draw.

(But) I wanted to come out here," Kokkinakis told reporters post-match. Earlier, Alex de Minaur eased past American qualifier Tristan Boyer in straight sets to advance to the third round.

Taylor Fritz, the highest-seeded American man at the Australian Open, needed just 82 minutes to defeat Cristian Garin on Thursday and advance to the third round.

We saw Alex de Minaur warming down on a bike on Tuesday ... Meanwhile, at the Rod Laver Arena, Tristan Schoolkate has allowed Jannik Sinner back into this match, with the Aussie losing the second ...

Elsewhere, Australian wildcard James McCabe was knocked out as American world No.42 Alex Michelsen claimed a steady 7-5 6-3 7-6 (7-4) victory. McCabe earned the biggest pay day of his career at $200,000. The 21-year-old defeated Spain’s Martin Landaluce in straight sets in the first round for his maiden win at a grand slam.

The pair met most recently at the ATP Tour Finals in Turin late last year when Sinner beat the underdone ... Karen Khachanov in the fourth round. Alex de Minaur will face Dutchman Botic van ...

To reach an Australian Open semi-final, Alex de Minaur will need ... Finals in Turin late last year when Sinner beat the underdone Aussie star 6-3, 6-4. De Minaur, 25, secured a valuable top ...

Alex de Minaur is through to the fourth-round of the Australian Open after a brilliant four-set win over Argentine 31st seed Francisco Cerundolo. Follow live.