Madison Keys pulled off a stunning victory, while Jannik Sinner charged to a convincing title defense. Plus, Paula Badosa and Ben Shelton impressed Down Under.

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

World number one and defending champion Sinner had dizzy spells in the scorching heat of the afternoon during his four-set ...

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

First came the medical timeouts, one each for Jannik Sinner and Holger Rune with the temperature above 90 degrees Fahrenheit ...

Jannik Sinner and Iga Swiatek are eyeing a place in the Australian Open quarter-finals on Monday while golden couple Gael ...

In the quarterfinals, Sinner will face No. 8 Alex de Minaur of Australia, who ousted American Alex Michelsen 6-0, 7-6 (5), ...

First came the medical timeouts, one each for Jannik Sinner and Holger Rune with the temperature above 90 degrees Fahrenheit ...

Jannik Sinner battled through illness and reached the quarter-finals of the Australian Open on Monday but the physical ...

Top seed and defending champion Jannik Sinner moved into the Australian Open quarterfinals following a hard-fought win over ...