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.

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 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

Aryna Sabalenka has won widespread praise for a classy and composed runner-up speech after the Australian Open final - just minutes after she smashed her racquet and stormed off court before the trophy presentation.

Madison Keys of the U.S. reacts as she receives the the Daphne Akhurst Memorial Cup from Evonne Goolagong Cawley after defeating Aryna Sabalenka of Belarus in the women's singles final at the ...

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

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.

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 is aiming for a historic three-peat at Melbourne Park. Will Madison Keys stop her with the feel good story of the tournament?

Australian Open women’s champion Madison Keys has returned to her career-best ranking and joins three other American women in the WTA top 10, while men’s champion Jannik Sinner maintained his significant lead atop the ATP list.

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.