Canada's Eugenie Bouchard will face Kurumi Nara in the semifinals at the Japan Open following a victory over Barbora Zahlavova Strycova of the Czech Republic on Friday in Osaka.
The Montreal native prevailed 2-6, 6-4, 6-1 in their last-eight tie.
Elsewhere, former champion Samantha Stosur moved into the semis with a 6-1, 3-6, 6-3 win against Misaki Doi of Japan, while Kurumi Nara defeated Polona Hercog of Slovenia 7-6 (4), 2-6, 6-1.
Third-seeded Stosur, who won the title in 2009, raced away to 5-0 in the opening set but it was far from simple after that as Misaki Doi battled back to stir the home crowd and take the second.
The pair exchanged breaks of service in the third set before Stosur, the highest remaining seed, held out to win.
Awaiting Stosur in the last four on Saturday is American teenager Madison Keys, who reached her first WTA semifinals with a 6-3, 6-1 win against Zheng Jie of China.