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.

Sinner became the youngest player to register nine consecutive wins at the Australian Open in the men's singles since Novak Djokovic between 2008 and 2009

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

Jannik Sinner will make his official debut in 2025 at the Australian Open tomorrow. The world number 1 will face the Chilean ace Nicolas Jarry in the first round, in a match that could hide some pitfalls. However, there is no doubt that the Italian champion is the top favorite to win at Melbourne Park this year and confirm the title won in 2024.

In a match slated for Tuesday, Tristan Schoolkate (No. 173 in rankings) will meet Jannik Sinner (No. 1) in the Round of 64 at the Australian Open.Sinner’s last competition was a win, 6-2,

Iga Swiatek, a self-described “control freak,” is taking new precautions — including holding on to extra samples of medicine she takes, in case they need to be tested at some point — after a doping case she describes as probably the worst time in her life.

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 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,