Dominika Cibulkova reaches semis
The 10th-ranked Cibulkova saved 20 break points to prevail over her sixth-seeded opponent after more than 2½ hours.
In the other semifinal, second-seeded Shuai Zhang of China will take on Donna Vekic of Croatia.
The 45th-ranked Zhang fought off 10 break points to beat Magda Linette of Poland 6-2, 2-6, 6-1.
Vekic, who is yet to win a title on the circuit, hit 10 aces to overcome fourth-seeded Patricia Mayr-Achleitner of Austria 6-4, 7-5.