Barty is on track to become the first Australian champion since Chris O'Neil in 1978 and will be hot favourite when she plays 25th seed Karolina Muchova in the quarter-finals
Australian Open 2021: Ashleigh Barty unfazed by local expectations as she aims to end Australia's 43-year trophy drought
The Australian last week played her first match in 11 months after opting to remain home in relatively Covid-19 free Queensland state during the pandemic and even decided against defending her French Open crown.
World No 1 Ashleigh Barty says she hopes to reunite with coach Craig Tyzzer in Australian Open build-up
Australia's Barty, a day after withdrawing from her French Open title defence because of Covid-19 concerns and a lack of preparation, said it was "really tough" to be without her coach Craig Tyzzer.