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

By Nick Mulvenney MELBOURNE (Reuters) -Defending champion Jannik Sinner recovered his composure after an early setback to storm into the third round of the Australian Open on Thursday but Brazilian teenager Joao Fonseca's first Grand Slam campaign came to an end in the second round.

Danielle Collins keeps perspective after falling to fellow American Madison Keys in the third round of the Australian Open

Defending men’s champion Jannik Sinner, Carlos Alcaraz and Novak Djokovic all play, with Nick Kyrgios leading Australian hopes. They are joined by Iga Swiatek, Coco Gauff, Ons Jabeur, Danielle Collins and Naomi Osaka on a star-studded day’s play. Here’s what to watch on the three biggest show courts and around the grounds.

Defending champion Jannik Sinner raced into the Australian Open semi-finals on Wednesday in imperious fashion after Iga Swiatek was equally ruthless to close on a first Melbourne crown.

The Australian Open delivered intense action as Jannik Sinner overcame an early setback to advance, while Danielle Collins engaged with fans after a thrilling victory. Major champions Swiatek, Raducanu,

Swiatek’s latest lopsided win came via a 6-1, 6-2 score line in the quarter-finals against No. 8 seed Emma Navarro on Wednesday

Defending champion Jannik Sinner recovered his composure after an early setback to storm into the third round of the Australian Open on Thursday but Brazilian teenager Joao Fonseca's first Grand Slam campaign came to an end in the second round.

Things are somewhat out of control at the Australian Open this year, and that’s got only a little to do with the results on the courts.

Iga Swiatek is dominating her Australian Open opponents the way no one has at Melbourne Park since Maria Sharapova in 2013.

SportsLine's Jose Onorato reveals his picks for the 2025 Australian Open women's semifinal of Iga Swiatek vs. Madison Keys on Thursday