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.

A vintage Novak Djokovic tamed Carlos Alcaraz in a late-night blockbuster to set up anAustralianOpensemi-final with Alexander Zverev as two-time women's defending champion Aryna Sabalenka fought on.

Naomi Osaka, a two-time champion in Australia, stopped playing because of a strained abdominal muscle after dropping the first set of her match against Tokyo Olympics gold medalist Belinda Bencic.