UPDATE 3-Tennis-Madrid Open women's singles quarterfinal results

May 7 (Infostrada Sports) - Results from the Madrid Open Women's Singles Quarterfinal matches on Thursday 4-Petra Kvitova (Czech Republic) beat Irina Begu (Romania) 7-5 6-3 Svetlana Kuznetsova (Russia) beat 13-Lucie Safarova (Czech Republic) 5-7 7-6(5) 7-6(3) 1-Serena Williams (U.S.) beat 10-Carla Suarez Navarro (Spain) 6-1 6-3 3-Maria Sharapova (Russia) beat 5-Caroline Wozniacki (Denmark) 6-1 3-6 6-3