WTA Madrid Open results on Saturday (x denotes seeded player): 2nd rd Ashleigh Barty (AUS x1) bt Tamara Zidansek (SVN) 6-4, 1-6, 6-3 Iga Swiatek (POL x14) bt Laura Siegemund (GER) 6-3, 6-3 Petra Kvitova (CZE x9) bt Angelique Kerber (GER) 6-4, 7-5 Veronika Kudermetova (RUS) bt Kiki Bertens (NED x7) 6-4, 6-3 Paula Badosa (ESP) bt Jil Teichmann (SWI) 5-7, 6-1, 6-2 Anastasija Sevastova (LAT) bt Johanna Konta (GBR x15) 6-3, 6-3 Ons Jabeur (TUN) bt Sloane Stephens (USA) 4-6, 6-1, 6-3 afp