The meeting lasted 1 hour 42 minutes and ended with a score of 1: 6, 6: 1, 6: 2 in favor of the 61st racket of the world.
In the semifinals, Kasatkina's rival will be her compatriot Svetlana Kuznetsova.
Earlier it was reported that Kuznetsova defeated Christian in the quarterfinals of the WTA tournament in St. Petersburg.