- Russia's Daria Kasatkina came up trumps in her first WTA final, breezing past fellow 19-year-old Jelena Ostapenko 6-3, 6-1 to claim a maiden title in Charleston. "It's very difficult to describe my feeling now," Kasatkina said. "I feel I'm just sleeping and everything is not real. I'm so happy." In the first all-teen WTA final since 2009, Kasatkina's consistency paid off. She belted just seven winners to her Latvian opponent's 25, but she also made just seven unforced errors to Ostapenko's 38. They traded breaks early in the opening set, Ostapenko leveling the set at 3-3 before Kasatkina ruthlessly pulled away to win in just 66 minutes. Kasatkina's victory underscores her rising-star status already established with two wins over world number one Angelique Kerber this year.