World number one Jannik Sinner will not defend his ATP 500 title in Rotterdam as the Italian's "body needs time to rest" after winning the Australian Open, tournament organisers announced Monday.

Double Australian Open champion Jannik Sinner set his sights on mastering clay and grass courts to make himself a complete player after the Italian claimed his third hardcourt Grand Slam title on Sunday.

Bernet beat American Benjamin Willwerth 6-3, 6-4 on his 18th birthday to join the likes of Alexander Zverev, Nick Kyrgios and Gael Monfils in lifting the Melbourne trophy.

The 10-time Melbourne Park winner Djokovic outlasted the younger Spaniard 4-6, 6-4, 6-3, 6-4 to set up a semi-final with Alexander Zverev.

Ageless Novak Djokovic won an epic generational clash against Carlos Alcaraz on Tuesday to stay on track for an 11th Australian Open title with Alexander Zverev next in the semifinals.

"Couple days ago the famous sports journalist who works for official broadcaster Channel Nine here in Australia made a mockery of Serbian fans and also made insulting and offensive comments towards me," he said, not naming him but appearing to reference Tony Jones.

Jaime Alcaraz Garfia won his first qualifying match at the Les Petits As on Saturday, putting him one victory away from the main draw at an event that is a premier fixture on the Junior European Tour.

Double-defending champion Sabalenka blew away Russian 17-year-old Mirra Andreeva 6-1, 6-2 in a ruthless display on the hottest day of the Melbourne tournament so far.

Ukraine's Svitolina beat Jasmine Paolini 2-6, 6-4, 6-0 in the third round of the women's draw just hours after Frenchman Monfils stunned American Taylor Fritz on the same Margaret Court Arena in the men's singles.

The world number one remained on track to win her third consecutive Melbourne Park title but only after a rollercoaster scrap that lasted more than two hours on Rod Laver Arena.