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.

On the cusp of snapping his Australian Open round of 16 hoodoo and reaching a fourth straight major quarter-final, the story behind the incremental improvements for Australia’s best player Alex de Minaur lies in the numbers.

It was the opening round of the 2017 Australian Open in de Minaur’s first main draw at his first major championship in his home country, when the then-17-year-old saved a match point in the fourth set before beating Gerald Melzer in five sets and almost four hours.

The stage is set for an entertaining day of quarterfinal action at the Australian Open with four intriguing matches on the slate at Melbourne Park. As always, we here at LWOT will be offering our predictions for every match – including all the action in the women’s singles draw – but who will secure their spot in the last four?

Alex de Minaur ticked off yet another milestone in his illustrious career Monday, taking down American Alex Michelsen to qualify for the quarter-finals of the Australian Open for the very first time.

Watch the match highlights between Alex Michelsen & Alex de Minaur in Round 4 of the 2025 Australian Open Men's Singles Tournament Tennis.