Results from Day 6 of the Australian Open at Melbourne Park on Saturday: Men's singles 3rd rd Casper Ruud (NOR x24) bt Radu Albot (MDA) 6-1, 5-7, 6-4, 6-4 Mackenzie McDonald (USA) bt Lloyd Harris (RSA) 7-6 (9/7), 6-1, 6-4 Daniil Medvedev (RUS x4) bt Filip Krajinovic (SRB x28) 6-3, 6-3, 4-6, 3-6, 6-0 Women's singles 3rd rd Karolina Muchova (CZE x25) bt Karolina Pliskova (CZE x6) 7-5, 7-5 Donna Vekic (CRO x28) bt Kaia Kanepi (EST) 5-7, 7-6 (7/2), 6-4 Jennifer Brady (USA x22) bt Kaja Juvan (SLO) 6-1, 6-3 Jessica Pegula (USA) bt Kristina Mladenovic (FRA) 6-2, 6-1 Elina Svitolina (UKR x5) bt Yulia Putintseva (KAZ x26) 6-4, 6-0 afp