Katie Boulter had an adorable message for a fellow tennis power couple after they won matches on the same day at the Australian Open. Gael Monfils and Elina Svitolina both upset the No. 4 seeds in the men’s and women’s singles draws in back-to-back matches on Margaret Court Arena.

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.

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.

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

Jannik Sinner cruised into the Australian Open semi-finals on Day 11, January 22, after defeating home favourite Alex de Minaur in straight sets at Rod Laver Arena. The Italian, who didn’t look well in his previous match against Holger Rune,

Australian Open latest score and updates from blockbuster quarter-final - Sinner booked his place in the semi-finals with a 6-3 6-2 6-1 victory over Australia’s De Minaur

Pat Rafter has warned Alex de Minaur to batten down the hatches as he strives to enter uncharted waters at the Australian Open.

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.

Jannik Sinner and Iga Swiatek are some of the prominent players who will be in action on the 11th day in Melbourne.

6-4 victory over Elina Svitolina to set up a meeting with Swiatek tomorrow. Jannik Sinner aims to take one step closer to the Australian Open title when he faces Alex De Minaur in a blockbuster ...

Quarterfinals continue on day 11 at Melbourne Park as Alex de Minaur prepares for his maiden appearance in the final eight of the Australian Open. Follow live.