World No.1 and defending champion Jannik Sinner, Iga Swiatek, Elina Svitolina, Elena Rybakina and other big players will be in action on Day 9 of the hard court major at the Melbourne Park.

Jannik Sinner battled through illness to reach the quarter-finals of the Australian Open on Monday as his Italian compatriot Lorenzo Sonego ended teenager Learner Tien's fairytale run. Madison Keys la

Iga Swiatek will look to continue her march to a maiden Australian Open title on Wednesday while Jannik Sinner's powers of recovery will be tested in a quarter-final against home hope Alex de Minaur.

World No. 1 Jannik Sinner fought through blistering heat and an undisclosed ailment to defeat Holger Rune 6-3, 3-6, 6-3, 6-2 and advance to the quarterfinals of the Australian Open

LIVE: Katie Boulter forces deciding third set against Veronika Kudermetova in second round LIVE: Defending champion Jannik Sinner loses first set to world number 173 Tristan Schoolkate RESULT ...

Defending champion Jannik Sinner beats world number 173 Tristan Schoolkate 4-6 6-4 6-1 6-3 RESULT: Katie Boulter loses 7-6 (7-3) 2-6 6-2 to Veronika Kudermetova in second round RESULT: Emma ...

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.

The World No. 1, despite feeling unwell in sweltering conditions, kept up his title defense with a four-set triumph.

Johns Peers whips up enough feel-good moments for a Tom Hanks movie. He won a joyful Olympic bronze medal with Ash Barty at Tokyo. Claimed gold with Matt Ebden in a highlight moment of the Paris Games.

The last of the Australian Open men's quarterfinals takes place in the wee hours of Wednesday morning, in the United States.

Elina Svitolina was 4-1 down before she went on a roll and took 11 of the next 12 games in a 6-4, 6-1 victory over Veronika Kudermetova ... either. Jannik Sinner gets past Holger Rune at ...