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 ...

Defending champion Jannik Sinner moved into the Australian Open quarterfinals at Melbourne Park on Monday by eliminating the ...

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 ...

The defending champion moved into the quarterfinals at Melbourne Park on Monday by eliminating the 13th-seeded Rune 6-3, 3-6, ...

MELBOURNE—Novak Djokovic was at the center of another Australian Open row on Monday while defending champion Jannik Sinner ...

Highlights of the ninth day of the Australian Open on Monday (times GMT): 1145 HOME HOPE DE MINAUR BOOKS DEBUT QUARTER-FINAL ...

Elina Svitolina has rallied from two breaks down in the first set and taken 11 of the next 12 games in a 6-4, 6-1 victory ...

Defending champion and top seed Jannik Sinner overcame a debilitating medical episode as well as Dane Holger Rune to reach ...

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MELBOURNE, AUSTRALIA (AP) _ Results Monday from Australian Open at Melbourne Park (seedings in parentheses): Jannik Sinner (1), Italy, def. Holger Rune (13), Denmark, 6-3, 3-6, 6-3, 6-2. Lorenzo ...