Tennis: Sydney International results

Results of matches played at the Sydney International on Thursday (x denotes seed):

Women's singles

Semi-finals

Tsvetana Pironkova (BUL) bt Petra Kvitova (CZE x2) 6-4, 6-3

Angelique Kerber (GER x5) bt Madison Keys (USA) 6-4, 6-2

Men's singles

Quarter-finals:

Juan Martín del Potro (ARG x1) bt Radek Stepanek (CZE) 6-4, 3-6, 6-3

Dmitry Tursunov (RUS x4) bt Denis Istomin (UZB) 7-6 (7/5), 6-2

afp