Results on day three of the Australian Open Grand Slam at Melbourne Park on Wednesday: Men's singles 2nd round Sam Querrey (USA) bt Ricardas Berankis (LTU) 7-6 (7/2), 4-6, 6-4, 6-4 Stefanos Tsitsipas (GRE x6) bt Philipp Kohlschreiber (GER) retired Women's singles 1st round Sara Sorribes (ESP) bt Veronika Kudermetova (RUS) 2-6, 6-1, 6-1 Anett Kontaveit (EST x28) bt Astra Sharma (AUS) 6-0, 6-2 Iga Swiatek (POL) bt Timea Babos (HUN) 6-3, 6-2 Carla Suarez (ESP) bt Aryna Sabalenka (BLR x11) 7-6 (8/6), 7-6 (8/6) Heather Watson (GBR) bt Kristyna Pliskova (CZE) 4-6, 6-3, 6-1 Anastasia Pavlyuchenkova (RUS x30) bt Nina Stojanovic (SRB) 6-1, 7-5 Taylor Townsend (USA) bt Jessica Pegula (USA) 6-4, 7-6 (7/5) Women's singles 2nd round Alison Riske (USA x18) bt Lin Zhu (CHN) 6-3, 6-1 Julia Goerges (GER) bt Petra Martic (CRO x13) 4-6, 6-3, 7-5 Ekaterina Alexandrova (RUS x25) bt Barbora Krejcikova (CZE) 6-1, 6-3 Petra Kvitova (CZE x7) bt Paula Badosa (ESP) 7-5, 7-5 Naomi Osaka (JPN x3) bt Zheng Saisai (CHN) 6-2, 6-4 Zhang Shuai (CHN) bt Caty McNally (USA) 6-2, 6-4 Sofia Kenin (USA x14) bt Ann Li (USA) 6-1, 6-3 afp