Second-seeded Czech Petra Kvitova advanced to the final of the Prague Open by beating China's Shuai Zhang 7-6 (8-6) 6-0.
Trailing 5-1, the two-time Wimbledon champion rallied before dominating the second set on the way to her 30th career final.
World No.10 Kvitova has not yet dropped a set in her debut in the tournament.
The Czech player will next face Romanian seventh seed Mihaela Buzarnescu of Romania, who rallied to defeat Camila Giorgi of Italy 4-6 6-3 7-5.
Kvitova is seeking her 23rd WTA title, and third this year. Buzarnescu has yet to win a WTA tournament.