The Czech player won 7-6 (7/5), 2-6, 6-4 and faces China’s Olympic champion Zheng Qinwen or 17-year-old Russian Mirra Andreeva for a place in the final.
The 49th-ranked Karolina Muchova stunned top seed Aryna Sabalenka in three sets to reach the China Open semifinals on Friday.
The Czech player won 7-6 (7/5), 2-6, 6-4 and faces China’s Olympic champion Zheng Qinwen or 17-year-old Russian Mirra Andreeva for a place in the final.