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.

De Minaur is the first Aussie male to reach the last eight at Melbourne Park since Nick Kyrgios in 2015. The achievement was not lost on his mum Esther with video of her emotional response going viral. You can watch the adorable moment in the video player below.

The Australian Open quarter-finals continue on Wednesday and top seed Jannik Sinner's task of defending his crown is not getting any easier. The Italian is recovering from an illness and will face Australia's last hope Alex De Minaur,

Usually it's fiancee Katie Boulter who draws all the attention in Alex de Minaur's player's box at the Australian Open. But on Monday night it was his mum Esther who stole the show in a viral moment.

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

Once again, tennis power couple Katie Boulter and Alex de Minaur have displayed their unity, this time in Australia. De Minaur achieved a significant milestone at his home Slam on Monday,

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.

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

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

The 16-year-old also made the bold claim he wanted to surpass his father's legacy in Australian tennis and become one of the all-time greats. "I try to focus on the good things that come with it," Cruz Hewitt told Channel 9 of the the pressure that comes with being Lleyton's son.

He’s become part of the furniture every January at the Australian Open but Rod Laver won’t be attending the grand slam this year.