Katie Volynets upset No.4 seed Tatjana Maria in three sets in the Thailand Open second round, notching her fourth Top 50 win to reach her second career tour-level quarterfinal (following Austin 2023).

Katie Volynets reached her first WTA semifinal by taking big leads in each set and holding off reigning NCAA singles champion Peyton Stearns to win 7-5, 6-3 in a matchup between a pair of 21-year ...