Results from day four of the Australian Open at Melbourne Park on Thursday: Men's singles 2nd rd Andrey Rublev (RUS x7) bt Thiago Monteiro (BRA) 6-4, 6-4, 7-6 (10/8) Feliciano Lopez (ESP) bt Lorenzo Sonego (ITA x31) 5-7, 3-6, 6-3, 7-5, 6-4 Casper Ruud (NOR x24) bt Tommy Paul (USA) 3-6, 6-2, 6-4, 7-5 Radu Albot (MDA) bt Christopher O'Connell (AUS) 6-2, 7-5, 7-6 (10/8) Lloyd Harris (RSA) bt Alexei Popyrin (AUS) 6-2, 1-6, 6-3, 6-7 (5/7), 6-3 Mackenzie McDonald (USA) bt Borna Coric (CRO x22) 6-4, 6-2, 4-6, 6-4 Filip Krajinovic (SRB x28) bt Pablo Andujar (ESP) 6-2, 5-7, 6-1, 6-4 Stefanos Tsitsipas (GRE x5) bt Thanasi Kokkinakis (AUS) 6-7 (5/7), 6-4, 6-1, 6-7 (5/7), 6-4 Mikael Ymer (SWE) bt Carlos Alcaraz (ESP) 2-6, 6-4, 6-4, 7-6 (7/5) Karen Khachanov (RUS x19) bt Ricardas Berankis (LTU) 6-2, 6-4, 6-4 Matteo Berrettini (ITA x9) bt Tomas Machac (CZE) 6-3, 6-2, 4-6, 6-3 Women's singles 2nd rd Ashleigh Barty (AUS x1) bt Daria Gavrilova (AUS) 6-1, 7-6 (9/7) Ekaterina Alexandrova (RUS x29) bt Barbora Krejcikova (CZE) 6-3, 7-6 (7/4) Anett Kontaveit (EST x21) bt Heather Watson (GBR) 6-7 (5/7), 6-4, 6-2 Shelby Rogers (USA) bt Olga Danilovic (SRB) 6-2, 6-3 Belinda Bencic (SUI x11) bt Svetlana Kuznetsova (RUS) 7-5, 2-6, 6-4 Elise Mertens (BEL x18) bt Lin Zhu (CHN) 7-6 (10/8), 6-1 Karolina Muchova (CZE x25) bt Mona Barthel (GER) 6-4, 6-1 Karolina Pliskova (CZE x6) bt Danielle Collins (USA) 7-5, 6-2 Kaia Kanepi (EST) bt Sofia Kenin (USA x4) 6-3, 6-2 Donna Vekic (CRO x28) bt Nadia Podoroska (ARG) 6-2, 6-2 Jennifer Brady (USA x22) bt Madison Brengle (USA) 6-1, 6-2 Kaja Juvan (SLO) bt Mayar Sherif (EGY) 3-6, 7-6 (7/2), 6-3 Yulia Putintseva (KAZ x26) bt Alison Van Uytvanck (BEL) 6-4, 1-6, 6-2 afp