Madison Keys of the United States has upset two-time defending champion Aryna Sabalenka of Belarus 6-3, 2-6, 7-5 in the Australian Open final.

Aryna Sabalenka saw her two-year reign at the Australian Open end after losing to Madison Keys in the final – and she didn’t take it well.

Aryna Sabalenka cut a frustrated figure during the Australian Open final as she lost in three sets to Madison Keys, before breaking down into tears and leaving the court

The World No.1 couldn't hide her frustrations after losing to Madison Keys in the decider.

Madison Keys -- using a mix of solid serves, power and defense -- upset two-time defending champion and top seed Aryna Sabalenka 6-3, 2-6, 7-5 to win the Australian Open on Saturday, giving the 29-year-old American her first Grand Slam title in 46 tries.

The 29-year-old from Rock Island, Illinois, beat the No. 1-ranked woman and two-time defending Australian Open champion at Melbourne Park Saturday night.

Aryna Sabalenka has revealed she smashed her racquet in frustraion after losing the Australian Open final because she had been “so close close to achieving something crazy”. The world No.1 had been the red-hot favourite to join the greats in tennis history by completing a hat-tricks of title wins here.

The World No. 1 demolished Paula Badosa in straight sets, 6-4, 6-2, on Thursday to clinch a third consecutive Australian Open finals berth.

Her racquet smash and swift exit took the focus off the new champion, but she says there was a good reason for it all.

Australian Open champion Aryna Sabalenka has described Melbourne as “a second home” as she embarks on a historic quest to win a third consecutive Australian Open.

Aryna Sabalenka has put herself within reach of a third-straight Australian Open title after storming through the semifinals.

In gaining her first victory in a Grand Slam tennis event, Madison Keys becomes the third Black woman, behind Evonne Goolagong-Cawley and Serena Williams, to win the Australian Open women’s singles title. She is also the first woman since Serena Williams to beat the number one and two seeds on her way to the winner’s trophy.