Ashleigh Barty defeated Madison Keys while Danielle Collins saw off seventh seed Iga Swiatek for a meeting in the final.
The 3-hour, 1-minute victory is the longest match of Swiatek's young career at a Grand Slam to date.
For only the second time in his career, the Russian star bounced back from a two-sets-to-love deficit under the lights at Rod Laver Arena on Wednesday.
Kaia Kanepi completed her career set of Grand Slam quarter-finals with a stunning come-from-behind win over second seeded Aryna Sabalenka at the 2022 Australian Open.
Daniil Medvedev, Jannik Sinner and Felix Auger-Aliassime are all through to the quarterfinals of the Australian Open 2022.
Denis Shapovalov produced one of the biggest upsets till now at the Australian Open, beating World No.3 Alexander Zverev on Sunday.
Belgian tennis player Alison Van Uytvanck said on Sunday she had tested positive for COVID-19 after playing at the Australian Open.
Sania Mirza remains the only Indian in fray at the Australian Open 2022 contesting in the mixed doubles with her American partner Rajeev Ram.
Denis Shapovalov beat Zverev 6-3, 7-6(5), 6-3 to book a spot in the quarterfinals of the Australian Open, where he will face Rafael Nadal.
Rafael Nadal beat Adrain Mannarino 7-6(14), 6-2, 6-2 to book his spot in the last eight of the opening Grand Slam of the season.