The quarterfinals are underway at Melbourne Park, as rumours abound about Jannik Sinner's health ahead of his clash with Alex de Minaur. Follow live.

Follow live text and radio commentary as Alex de Minaur plays Alex Michelsen in the Australian Open fourth round.

A falling feather leads to a fuming German, a teenager makes an instant impact, and it is double delight for Aussie doubles. Here are the five quick hits from day 10 of the Australian Open.

Alex de Minaur relishes the challenge that awaits when he faces world No.1 Jannik Sinner in his maiden Australian

The Bet365 live streaming tennis platform is the place to watch every point of the Australian Open quarter-final clash between Sinner and De Minaur. The match is scheduled to start at 8.30am GMT, although it could be delayed due to other matches on the docket.

Now we’re talking. Here’s the real Alex de Minaur. Hitting freely. Unencumbered. Whistling while he works. He had the weight of Melbourne Park on his shoulders but now finds himself smack-bang where he desires to be.

In the Round of 16 at the Australian Open on Sunday, Alex de Minaur (ranked No. 8) meets Alex Michelsen (No. 42).In his most recent match on Friday, Michelsen knocked off Karen Khachanov in three

Lorenzo Sonego will take on American Ben Shelton in the other men’s quarter-final on Jan 22. Read more at straitstimes.com.

Here is everything you need to know about Alex De Minaur vs. Jannik Sinner, including TV and streaming options for the match.

Since Hewitt won his last major title, only two Australians have even reached grand slam finals - Hewitt at the Australian Open (2005) and Nick Kyrgios at Wimbledon (2022). At 19 years old, Kyrgios was anointed Australia's next grand slam winner when he beat Rafael Nadal and reached the Wimbledon quarter-finals in 2014.

Defending champion Jannik Sinner takes on Alex de Minaur in the last quarterfinal of the men's singles event on Wednesday