The world No. 1 and three-time Grand Slam champion lags behind her contemporaries in endorsements despite standing atop her sport

Jannik Sinner joined some of tennis' greatest legends with another stellar performance in the Australian Open final.

An American woman is a champion once again. After having to face the two best players in the world -- Iga Switaek and Aryna Sabalenka -- Madison Keys has claimed her first Grand Slam title at the Australian Open. Keys outlasted Sabalenka in the final on Saturday over three sets to accomplish the feat.

The world No. 1 came agonizingly close to winning a third straight title Down Under, but leaves Melbourne with plenty of positives despite a runner-up finish to Madison Keys.

Jannik Sinner and the Australian Open have in common the fact that the only thing that can beat them is to let success go to their heads.

Alexander Zverev is into the Australian Open final after Novak Djokovic retired hurt after losing the first set of his clash with the German. The German had taken a tie-break (7-5) when the Serbian called it quits, having struggled with a muscular problem in his left leg. Djokovic was booed as he limped off court.

19-seed Madison Keys upset World No. 1 Aryna Sabalenka to clinch her first Grand Slam title at 29 years old. On the men's side, the top two ranked players faced off, with Jannik Sinner dominating ...

There’s nothing quite like a sporting curse, and this time it seems a legendary actor might have wreaked havoc at the Australian Open.

Australian Open runner-up Aryna Sabalenka could be facing a big fine for her post-match reaction in the final. And Novak Djokovic has been called out for posting his injury scans at a time when the tennis world was celebrating Madison Keys' maiden grand slam triumph.

Jannik Sinner produced a relentless performance to win 6-3 7-6 (7-4) 6-3 and successfully defend his Australian Open title in a one-sided men’s final against Alexander Zverev.

Top-ranked Jannik Sinner, No. 2 Alexander Zverev, women’s No. 1 Aryna Sabalenka and former No. 1 Naomi Osaka will play exhibition matches March 1-2 in Las Vegas.

Facing Sinner reminded Alexander Zverev of trying to solve the challenge presented by the 24-time major champion Djokovic.