Prague WTA results on Wednesday (x denotes seeded player): 1st rd Laura Siegemund (GER) bt Mayar Sherif (EGY) 4-6, 6-0, 6-1 Tamara Zidansek (SLO) bt Katerina Siniakova (CZE) 6-3, 3-6, 6-0 2nd rd Elise Mertens (BEL x3) bt Camila Giorgi (ITA) 6-4, 6-2 Ana Bogdan (ROU) bt Lesya Tsurenko (UKR) - withdrew Kristyna Pliskova (CZE) bt Petra Martic (CRO x2) 6-1, 7-5 afp