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.

Question marks are lingering over Jannik Sinner and Alex de Minaur's Australian Open quarter final as rumours continue to swirl over the Italian's health.

The quarterfinals are underway at Melbourne Park, as rumours abound about Jannik Sinner's health ahead of his clash with Alex de Minaur. Follow live.

Lorenzo Sonego will take on American Ben Shelton in the other men’s quarter-final on Jan 22. Read more at straitstimes.com.

American Danielle Collins is out of the Australian Open following a straight-sets defeat by fellow countrywoman Madison Keys.

Sinner has been untouchable on Melbourne's hard courts, as his aggressive style seamlessly transitions from defense to offense. The superior head-to-head record against de Minaur-finding success on Australian soil in a straight-set win in the 2024 Davis Cup-only adds psychological weight to his rivalry with the Australian right-hander.

It's the biggest match of Alex de Minaur's career - an Australian Open quarter-final against reigning champion and world no.1 Jannik Sinner. De Minaur has never been to the last four in a major and he will have to overcome an 0-9 head-to-head record with the Italian champion.

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,