Tokyo - Svetlana Kuznetsova of Russia has advanced to the third round of the Pan Pacific Open by beating third-seeded Sara Errani of Italy 6-4, 6-4 Tuesday.
Kuznetsova, a two-time major winner, hit seven aces in the match and will next face 15th-seeded Sorana Cirstea of Romania. Cirstea beat Japanese wild-card entry Misaki Doi 6-1, 6-2.
In other second-round matches, Eugenie Bouchard of Canada defeated ninth-seeded Sloane Stephens of the United States 5-7, 7-6 (7), 6-3. Bouchard will next play sixth-seeded Jelena Jankovic of Serbia, who beat Ayumi Morita of Japan 6-4, 6-1.
Other winners include Samantha Stouser of Australia, Ana Ivanovic of Serbia, Dominika Cibulkova of Slovakia and Madison Keys of the United States.
Results from the third day of the WTA Pan Pacific Open on Tuesday (x denotes seeding):
Samantha Stosur (AUS x12) bt Kimiko Date-Krumm (JPN) 6-3, 7-6 (7-2)
Svetlana Kuznetsova (RUS) bt Sara Errani (ITA x3) 6-4, 6-4
Caroline Wozniacki (DEN x4) bt Flavia Pennetta (ITA) 6-2, 6-3
Jelena Jankovic (SRB x6) bt Ayumi Morita (JPN) 6-4, 6-1
Ana Ivanovic (SRB x11) bt Elina Svitolina (UKR) 6-3, 6-0
Eugenie Bouchard (CAN) bt Sloane Stephens (U.S. x9) 5-7, 7-6 (9-7), 6-3
Sorana Cirstea (ROM x15) bt Misaki Doi (JPN) 6-1, 6-2
Dominika Cibulkova (SVK x16) bt Casey Dellacqua (AUS) 7-5, 6-3
Madison Keys (U.S.) bt Peng Shuai (CHN) 7-5, 6-2
Magdalena Rybarikova (SVK) bt Kirsten Flipkens (BEL) 6-2 6-3