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.

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.

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.

Alex de Minaur noticed one very strong comment made about his performance versus Jannik Sinner and he wasn't interested in letting it slide. On Wednesday, the home favorite player exited the Australian Open in the quarterfinal after the No. 1 seed handed him a 6-3 6-2 6-1 loss. Now, the Italian leads their head-to-head 10-0.

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.

Jannik Sinner advanced to the semi-final of the men's singles at Melbourne Park after beating homw favourite Alex de Minaur 6-3, 6-2, 6-1 at the Rod Laver Arena.

Alex de Minaur is yet to record a win over Jannik Sinner, but he has received a hint on how he can compete with the world number one in their Australian Open quarterfinal on Wednesday.

The WTA No. 25 was in the stands of Rod Laver Arena to watch De Minaur break new ground at the Australian Open on Monday, cheering him on as he beat Alex Michelsen in the last 16.