Local hope Alex de Minaur has suffered a thumping straight-sets Australian Open quarter-final loss to world No.1 and defending champion Jannik Sinner.

Alex de Minaur is knocked out of the Australian Open by defending champion Jannik Sinner, who wins their quarterfinal 6-3, 6-2, 6-1 inside two hours.

In the Australian Open quarterfinals on Tuesday, Jannik Sinner faces Alex de Minaur.In his most recent match on Sunday, Sinner took down Holger Vitus Nodskov Rune in four sets, 6-3, 3-6, 6-3, 6-2,

Earlier in the day, Iga Swiatek cruised past Emma Navarro 6-1, 6-2 in their Women’s Singles quarter-final while Madison Keys secured a surprising 3-6, 6-3, 6-4 victory over Elina Svitolina to set up a meeting with Swiatek tomorrow.

A night that promised so much for Alex de Minaur ended with another trip back to the drawing board following a loss that will require some serious soul-searching.

Defending champion Jannik Sinner dismissed eighth seed Alex de Minaur 6-3 6-2 6-1 to reach the Australian Open semi-finals and extend the country's decades-long wait for another homegrown singles winner at the Grand Slam on Wednesday.

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.

World No. 1 Jannik Sinner showcased his dominance by defeating Alex de Minaur 6-3, 6-2, 6-1 in the Australian Open quarterfinals on Wednesday. Sinner's powerful performance, highlighted by 27 winners,

World number one and defending champion Jannik Sinner crushed home favourite Alex De Minaur 6-3, 6-2, 6-1 at the Rod Laver Arena in Melbourne on Wednesday to cruise into the semi-finals of the Australian Open.