Osaka - Wimbledon finalist Sabine Lisicki of Germany outlasted Chanelle Scheepers of South Africa 7-5, 7-6 (1) to reach the second round of the Japan Open on Tuesday.
Lisicki struggled with a right wrist injury after making her first Grand Slam singles final, and has yet to win more than two matches in a row.
She hit five aces and took advantage of eight double faults by Scheepers to set up a second-round match against Polona Hercog of Slovenia, who beat Petra Cetkovska of the Czech Republic 6-4, 5-7, 6-1.
Also, Vania King of the United States ousted fourth-seeded Flavia Pennetta of Italy 3-6, 7-5, 6-0, and Japanese veteran Kimiko Date-Krumm dispatched seventh-seeded Laura Robson of Britain 6-4, 6-4.
Other winners included No 6-seeded Madison Keys of the United States and No 9 Kristina Mladenovic of France.
Results from the WTA Japan Women's Open on Tuesday:
Kristina Mladenovic (FRA x9) bt Aleksandra Wozniak (CAN) 7-6 (7/4), 6-4
Zheng Jie (CHN) bt Sharon Fichman (CAN) 6-2, 6-1
Zhang Shuai (CHN) bt Anabel Medina Garrigues (ESP) 6-0, 6-3
Madison Keys (USA x6) bt Anna Schmiedlova (SVK) 6-3, 6-2
Belinda Bencic (SUI) bt Lauren Davis (USA) 6-3, 7-5
Kimiko Date-Krumm (JPN) bt Laura Robson (GBR x7) 6-4, 6-4
Luksika Kumkhum (THA) bt Ayumi Morita (JPN) 6-2, 6-1
Barbora Zahlavova Strycova (CZE) bt Hsieh Su-Wei (TPE) 6-2, 6-2
Vania King (USA) bt Flavia Pennetta (ITA x4) 3-6, 7-5, 6-0
Polona Hercog (SLO) bt Petra Cetkovska (CZE) 6-4, 5-7, 6-1
Sabine Lisicki (GER x2) bt Chanelle Scheepers (RSA) 7-5, 7-6 (7/1)