Second-seeded Barbora Krejcikova advanced to the quarterfinals of the Prague Open by defeating Ysaline Bonaventure of Belgium 7-6 (2), 6-4.
The French Open champion will next face her doubles partner and Czech compatriot Katerina Siniakova.
Ninth-seeded Greet Minnen beat Russia’s Anastasia Gasanova 6-3, 7-6 (3). The Belgian will play Storm Sanders in the quarterfinals after the Australian came back to eliminate Nuria Parrizas Diaz of Spain 4-6, 6-3, 6-1.
China’s Xinyu Wang recovered from an early scare to beat Taiwan’s En-Shuo Liang 3-6, 7-5, 6-1 and will next play Grace Min of the United States.