SOFIA, Bulgaria, Oct. 29 (UPI) -- Top-seeded Simona Halep was among the winners Tuesday at the start of the WTA Tournament of Champions in Bulgaria.
The event invites WTA tournament winners from the current calendar year who didn't qualify for the WTA Championships. Halep won five titles this year, second only to world No. 1 Serena Williams, who notched her 11th win of the year Sunday in the WTA Championships final.