WTA Madrid Open results on Sunday (x denotes seeding): 2nd rd Aryna Sabalenka (BLR x5) bt Darya Kasatkina (RUS) 6-3, 6-3 Jessica Pegula (USA) bt Victoria Azarenka (BLR x12) - walkover Simona Halep (ROM x3) bt Zheng Saisai (CHN) 6-0, 6-4 Anastasia Pavlyuchenkova (RUS) bt Karolina Pliskova (CZE x6) 6-0, 7-5 Jennifer Brady (USA x11) bt Jelena Ostapenko (LAT) 6-2, 6-1 Maria Sakkari (GRE x16) bt Anett Kontaveit (EST) 6-3, 6-1 Karolina Muchova (CZE) bt Naomi Osaka (JPN x2) 6-4, 3-6, 6-1 afp