No.2 seed Dominika Cibulkova rounded out St. Petersburg's last eight line-up with a decisive win over Donna Vekic to book a quarterfinal encounter with No.5 seed Elena Vesnina.
No.1 seed Elina Svitolina made her way to the Taiwan Open quarterfinals after edging past Czech qualifier Lucie Hradecka in a tight straight sets.
Mandy Minella capped off a day of upsets at the Taiwan Open with a straight sets win over No.3 Caroline Garcia to book her spot in the quarterfinals.
Top seeds Elina Svitolina and Caroline Garcia had little trouble in their Taiwan Open debuts, both easing through their opening matches in straight sets.
Kurumi Nara came back from a set down against No.8 seed Jelena Jankovic to move into the second round of the Taiwan Open; Samantha Stosur records her first victory since 2016.
Simona Halep aims to rebound from an early exit at the Australian Open amidst a stacked field at the St. Peterburg Ladies Trophy while Elina Svitolina headlines the Taiwan Open.