The overtime thriller in the seaside city of Hua Hin gave the 18-year-old Yastremska her second WTA title. Hua Hin: Ukrainian Dayana Yastremska won the Thailand Open on Sunday with a hard-fought victory, battling past Australia’s Ajla Tomljanovic 6-2, 2-6, 7-6. After dominating the first set, eighth seed Yastremska faced some strong returns from the 25-year-old Tomljanovic, who took the …