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.

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.

In a new Daily Dose of Social Media, we see how players take advantage of moments off-court to have fun and share time with those close to them. Coco Gauff

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

The last time most casual tennis fans saw Coco Gauff, her US Open title defense ... lost significant ground in the rankings to No. 1 Jannik Sinner. But after adding the Roland Garros title ...

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.

Jan. 13 (UPI) --Coco Gauff and Jannik Sinner were among the top tennis stars to advance through first-round victories at the 2025 Australian Open on Monday in Melbourne. Stefanos Tsitsipas ...

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 ...