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.

Ben Shelton and Madison Keys are the last two Americans standing at the 2025 Australian Open. Shelton downed unseeded Italian Lorenzo Sonego in

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

The American rallied from a set down to reach the last four in Melbourne for the third time, and will face No. 2 seed Iga Swiatek next.

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

Iga Swiatek advanced to her second Australian Open semi-final after defeating Emma Navarro. Americans reached the semi-finals in both men's and women's singles, a first since 2009. Defending champion Jannik Sinner defeated Alex de Minaur,

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.

No. 19 seed Madison Keys scored the big upset on Day 9 of the Australian Open, defeating No. 6 Elena Rybakina 6-3, 1-6, 6-3 at Margaret Court Arena to advance to the tournament quarterfinals.

Swiatek, Svitolina, Keys, Sonego and Shelton also make it through to the last-eight stage on a hot day in Melbourne.