Results from WTA Charleston clay court tournament on Tuesday (x denotes seed): Women's 1st round Shelby Rogers (USA) bt Kristina Mladenovic (FRA) 6-4, 6-3 Anastasija Sevastova (LAT) bt Anastasia Potapova (RUS) 6-3, 6-3 Emma Navarro (USA) bt Renata Zarazua (MEX) 6-4, 6-3 Sloane Stephens (USA) bt Wang Xinyu (CHN) 6-2, 6-4 Leylah Fernandez (CAN) bt Zhang Shuai (CHN x16) 6-3, 6-1 Danka Kovinic (MNE) bt Gabriela Talaba (ROM) 7-6 (7/2), 6-4 Hailey Baptiste (USA) bt Caroline Dolehide (USA) 6-3, 6-3 Ons Jabeur (TUN x12) bt Martina Trevisan (ITA) 6-2, 6-2 Liudmila Samsonova (RUS) bt Nao Hibino (JPN) 6-2, 6-1 women's 2nd round Garbine Muguruza (ESP x6) bt Magdalena Frech (POL) 6-1, 6-3 Yulia Putintseva (KAZ x11) bt Zarina Diyas (KAZ) 6-2, 6-2 Petra Kvitova (CZE x3) bt Storm Sanders (AUS) 7-6 (7/4), 6-2 afp