In the semifinal match, Yastremska (No. 24 in the WTA rating) defeated Aryna Sabalenka of Belarus (No. 12) 6-4, 7-6 (7-4) in an hour and 45 minutes, Ukrinform reports.
The opponents met for the third time, with the 19-year-old Ukrainian winning all three games.
In her WTA Premier debut final on January 18, Yastremska will face the winner of a semifinal tie between world No. 1 Ashleigh Barty of Australia and American Danielle Rose Collins (No. 27).
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