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.

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.

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

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,

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

Alex de Minaur has given a cheeky sledge to his fiancee Katie Boulter about their wedding ahead of the biggest match of his career. Welcome to news.com.au’s live coverage of Day 11 of 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.

MELBOURNE - 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,

Defending champion Jannik Sinner raced into the Australian Open semi-finals on Wednesday in imperious fashion after Iga Swiatek was equally ruthless to close

Ben Shelton wore down Italian Lorenzo Sonego 6-4, 7-5, 4-6, 7-6 (4) in a highlight-laden clash and ensured the United States has players in the men’s and women’s semi-finals for the first time since Andy Roddick and Serena Williams in 2009.

Italian defending champion will face stubborn American 21st seed while world No 2 Iga Swiatek is on track for her first title in Melbourne.