SYDNEY, Jan. 11 (UPI) -- World No. 1 Caroline Wozniacki was one of three highly seeded players to lose second-round matches Tuesday at the Medibank International tournament in Sydney.
Dominika Cibulkova defeated Wozniacki, who was making her 2011 debut, 6-3, 6-3. Cibulkova saved nine of the 10 break points she faced while finishing off four of the six she forced on Wozniacki.