SOFIA, Bulgaria, Oct. 31 (UPI) -- Caroline Wozniacki took a strong lead in her group while Nadia Petrova and Maria Kirilenko also won Wednesday at the WTA Tournament of Champions in Bulgaria.
Wozniacki was very solid in a 6-3, 6-1 victory over fourth-seeded Roberta Vinci. That put Wozniacki at 2-0 in group play with a chance to complete the round-robin unbeaten on Thursday.