Results from the WTA Phillip Island Trophy at Melbourne Park on Wednesday: Women's singles Quarter-finals Danielle Collins (USA x8) bt Rebecca Peterson (SWE x16) 6-1, 6-2 Darya Kasatkina (RUS) bt Petra Martic (CRO x4) 6-0, 6-4 Marie Bouzkova (CZE x13) bt Jil Teichmann (SUI) 6-3, 4-6, 6-2 Bianca Andreescu (CAN x2) bt Irina Begu (ROM) 6-3, 4-6, 7-6 (7/5) afp