Moscow: Former No. 1 Caroline Wozniacki advanced to the Kremlin Cup semifinals by beating defending champion Dominika Cibulkova 6-2, 6-7 (1), 6-1 on Friday.
Wozniacki won four consecutive games in the first set and later took advantage of an ailing Cibulkova, who was playing with her right hip bandaged and took a medical timeout while trailing 2-1 in the third set.
The third-seeded Wozniacki struggled with her serve in the second set as both players traded breaks four times. The Dane was serving for the match two times later in the set but was broken at love on both occasions. Cibulkova had her left ankle treated.