Australian Open latest score and updates from blockbuster quarter-final - Sinner looks to book his place in the semi-finals when he faces Australia’s De Minaur

A few hours ago Iga Swiatek dropped just three games as she breezed past Emma Navarro to reach the Australian Open semi-finals and continue her bid for a maiden Melbourne title. Five-time major winner Swiatek was ruthless in a 6-1 6-2 victory over eighth seed Navarro.

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.

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

As much as any top player, Sinner has been able to expose De Minaur’s lack of first-strike weaponry. The Aussie’s strength is his scrambling and counterpunching, but Sinner serves too well, hits too hard, places the ball too precisely for his defense to be effective. De Minaur hasn’t found a way to hurt, rattle, of disrupt him.

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

World tennis No.1 Jannik Sinner is reportedly seriously ill with pneumonia, ahead of his crucial clash against Alex de Minaur.

Day 9 of the Australian Open is in the books with Australian Alex de Minaur advancing into the quarterfinals for the first time.

MELBOURNE: Madison Keys is back into the Australian Open semifinals for a third time after her 3-6, 6-3, 6-4 win Wednesday over Elina Svitolina of Ukraine. The 29-year-old

Follow live text and radio commentary as Alex de Minaur plays Alex Michelsen in the Australian Open fourth round.

The Australian Open quarter-finals are heating up as Jannik Sinner, battling illness, faces Australia's Alex De Minaur. Meanwhile, Iga Swiatek enters her match free of doping appeals. Experienced players Madison Keys and Elina Svitolina also showcase their adaptability in women's top matches.

The Australian Open quarter-finals continue on Wednesday and top seed Jannik Sinner's task of defending his crown is not getting any easier. The Italian is recovering from an illness and will face Australia's last hope Alex De Minaur,