Defending champion Jannik Sinner has moved into the quarterfinals at the Australian Open after beating Holger Rune during a match slowed down by medical timeouts for each player and a delay because the net got knocked loose.

Prime Minister Anthony Albanese has sworn to take “the strongest action possible” if Russia has executed an Australian prisoner of war. Australian officials are urgently trying to ascertain whether Melbourne teacher Oscar Jenkins has been killed by Russian forces in Ukraine after being captured while fighting for Ukraine.

Australia has vowed it will take the “strongest action possible” if Russia has harmed one of its nationals captured fighting for Ukraine, after reports emerged the prisoner of war may have been killed.

A foreign soldier who trained Oscar Jenkins to fight in Ukraine accused Russian troops of torturing and executing the Australian man to make an example of him.

MELBOURNE, Jan 13 (Reuters ... Kakhovka in southern Ukraine has been occupied by Moscow forces since the early days of the invasion, which Russia calls a special military operation. Some of her family managed to flee before the Russian forces arrived ...

Elina Svitolina delivered a stunning first-set comeback before overwhelming Veronika Kudermetova Monday to reach the Australian Open quarter-finals, but the Ukrainian did not shake hands with her Russian opponent.

The Albanese government has left the door open to expelling Russia’s envoy if reports captured Australian fighter Oscar Jenkins has been executed are true.

Thirty-nine-year-old Hsieh, who last year retired from singles, is also defending her mixed doubles title with partner Jan Zielinski of Poland, with whom she won at Wimbledon last year. The sixth seeds are today to play Irina Khromacheva of Russia and Jackson Withrow of the US in the second round.

MELBOURNE, Australia (AP) — Coco Gauff’s consecutive-set streak ended at the Australian Open. Her bid for a second Grand Slam title continued on Sunday with a 5-7, 6-2, 6-1 comeback victory over Belinda Bencic in the fourth round.

Australia’s Prime Minister Anthony Albanese says his government will take the “strongest action possible” if Russia has harmed an Australian who was taken prisoner while fighting for Ukraine

Daniil Medvedev has been fined a total of $76,000 for his camera and racket smashing outbursts during the first two rounds of the Australian Open.