Defending champion Jannik Sinner was not at his fluent best but still had too much firepower for unseeded American Marcos ...

Defending champion Jannik Sinner has defeated 46th-ranked Marcos Giron of the U.S. 6-3, 6-4, 6-2 at the Australian Open.

Jannik Sinner says he "still has room to improve" in his Australian Open title defence after beating Marcos Giron to reach ...

Ruthless defending champion Jannik Sinner was in the zone Saturday as he powered into the last 16 of the Australian Open with ...

Follow live text and radio commentary featuring Emma Raducanu, Iga Swiatek and Jannik Sinner in the Australian Open in ...

Jannik Sinner will part ways with veteran coach Darren Cahill after this season, the world's top-ranked tennis player ...

Defending champion Jannik Sinner’s consecutive-sets streak has ended in the second round of the Australian Open.

Defending champ Jannik Sinner drops set for first time since October, but rallies for win; American Danielle Collins plays ...

Defending champion Jannik Sinner comes from a set down to win and Britain's Katie Boulter is beaten at the Australian Open.

Defending champion Jannik Sinner raced to victory at the Australian Open on Saturday to sweep into the last 16 as Iga Swiatek ...

It's an up-and-down day for favorites and the husband-and-wife duo of Gaël Monfils and Elina Svitolina wo their singles ...