Coco Gauff and Jannik Sinner were among the top tennis stars to advance through first-round victories Monday at the 2025 Australian Open. Stefanos Tsitsipas, Grigor Dimitrov and Victoria Azarenka left Melbourne early.

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

Jannik Sinner launched his Australian Open title defence with a battling straight-sets win on Monday as Iga Swiatek and Coco Gauff also powered into round two.

It has been about four months since Jannik Sinner and Aryna Sabalenka polished off their US Open titles in comfortable fashion. Sinner dropped only two of 23 sets, while Sabalenka dropped only one of 15, and both won their second Slam titles of 2024 on their way to year-end No. 1 rankings.

The best players in the sport of tennis are in Melbourne to compete in the second round of the 2025 Australian Open after the first round of the men's and women

World No 3 Coco Gauff began her Australian Open campaign in style on Monday but former finalist Stefanos Tsitsipas became the biggest casualty of the tournament so far. Novak Djokovic begins his bid for grand slam history later on a blockbuster day two and Jannik Sinner starts the defence of the trophy he won 12 months ago.

MELBOURNE, Australia — (AP) — Coco Gauff had a little difficulty ... defending champion Jannik Sinner, Carlos Alcaraz, and women's No. 2 Iga Swiatek.

The best players in the sport of tennis are in Melbourne to compete in the third round of the 2025 Australian Open. After the second round of the men's and wome

MELBOURNE, Australia — (AP) — After wasting a set point in the second tiebreaker with an ill-conceived drop shot, Jannik Sinner quickly ... on John Cain Arena. Coco Gauff had a little ...

World number three Coco Gauff began her Australian Open campaign in style Monday but former finalist Stefanos Tsitsipas became the biggest casualty of the tournament so far. - 'Good to be back' - He will be preceded on court by world number one Sinner with the Italian aiming to put a doping scandal behind him when he opens his title defence against Chile's Nicolas Jarry.

Jannik Sinner, Carlos Alcaraz, Novak Djokovic, Coco Gauff and Iga Swiatek are some of the prominent players in action on the second day.

Jannik Sinne, Carlos Alcaraz and Novak Djokovic will start their campaign on Day 2 of the Australian Open 2025 on Monday, January 12. Coco Gauff, Iga Swiatek and Naomi Osaka will also be in action on Monday in Melbourne.