Olivia Rogowska defeated defending champion Jelena Dokic 3-6, 6-4, 7-6 (2) in Thursday's clash of Australians at the Malaysian Open.
Rogowska needed slightly over two hours to oust the seventh-seeded Dokic at the Bukit Kiara Equestrian and Country Resort.
Her quarterfinal opponent will be Eleni Daniilidou of Greece, who cruised past fourth-seeded Australian Jarmila Gajdosova 6-4, 6-0.
Third-seeded Peng Shuai of China came from a set down to eliminate the Czech Republic's Kristyna Pliskova 2-6, 6-1, 6-4. She will play fifth-seeded Croat Petra Martic in the quarters.
Top-seeded Agnieszka Radwanska of Poland completed her suspended first-round match by defeating Akgul Amanmuradova of Uzbekistan, setting up a second-round match against qualifier Karolina Pliskova, Kristyna's twin.