Madrid Open women's singles results

May 3 (Reuters) - Madrid Open women's singles second-round results on Tuesday

 5-Samantha Stosur (Australia) beat Daniela Hantuchova
(Slovakia) 7-6(1) 7-5
16-Petra Kvitova (Czech Republic) beat Chanelle Scheepers
(South Africa) 6-3 6-3
Bethanie Mattek-Sands (U.S.) beat Vania King (U.S.) 6-0 6-2