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

Defending champion Jannik Sinner's consecutive-sets streak ended in the second round of the Australian Open on Thursday night, but he advanced with a 4-6, 6-4, 6-1, 6-3 victory over wild-card entry Tristan Schoolkate.

World number one Jannik Sinner dropped a set for the first time in 14 matches on Thursday before surging back to keep his Australian Open title defense on track. The Italian top seed had no answers at the start against Australian wildcard Tristan Schoolkate,

Jannik Sinner has announced that he will part ways with his coach Darren Cahill at the end of the season. The Australian, who joined Sinner's team in July 2022, will conclude the 2025 campaign before stepping back from full-time tennis.

Jannik Sinner has started his Australian Open title defense with a challenging win over No. 35-ranked Nicolas Jarry.

Jannik Sinner has admitted he was 'struggling' to cope with the breezy conditions at the Australian Open as he beat Tristan Schoolkate in four sets on Thursday morning. The world No 1 is hoping to defend his title Down Under,