Second-seeded Caroline Wozniacki of Denmark rallied from a set down to beat qualifier Jarmila Gajdosova of Australia 4-6, 7-5, 6-3 Thursday to advance to the quarterfinals of the Pan Pacific Open.
The US Open finalist broke Gajdosova three times in the third set at Ariake Coliseum and won with a crosscourt backhand. She will take on eighth-seeded Carla Suarez Navarro of Spain in Friday's quarterfinals.
Suarez Navarro defeated Daria Gavrilova of Russia 7-6 (5), 6-3.
Also, Garbine Muguruza of Spain defeated fourth-seeded Jelena Jankovic of Serbia 7-6 (4), 6-4, and Casey Dellacqua of Australia beat Marina Erakovic of New Zealand 6-2, 6-4.