Two Grand Slam champions, a former US Open finalist, and an ex-Australian Open semi-finalist, form a scintillating last-four line-up that will take centre stage at Melbourne Park on Thursday evening.
In a battle of variety versus power, world No.1 and two-time major winner Ashleigh Barty takes on 2017 US Open runner-up Madison Keys, while 2020 Roland-Garros champion Iga Swiatek will square off with fiery American Danielle Collins, who returns to the Australian Open semi-finals for the second time in four appearances.