There were no real big upsets on day six. As the tournament progresses it is only natural for more seeded players to compete against each other; thus, some seeds will fall. Yet, despite the discrepancy in their seeding, some of the victories were not really upsets.
 Novak Djokovic (SRB) defeated  Denis Shapovalov (CAN) 6-3, 6-4, 4-6, 6-0.
 Naomi Osaka (JPN) defeated  Su-Wei Hsieh (TPE). Hsieh had the opportunity to pull off the upset, but could not capitalize and once Osaka found her game late in the match there was no stopping her. Osaka won 5-7, 6-4, 6-1.
 Karolina Pliskova (CZE) defeated  Camila Giorgi (ITA) in three sets. Despite the score it was a battle and Giorgi had her chances to pull off the upset. Pliskova won 6-4, 3-6, 6-2.
 Anastasija Sevastova (LAT) defeated  Qiang Wang (CHN) easily in straight sets: 6-3, 6-3.
 Madison Keys (USA) defeated  Elise Mertens (BEL) rather easily in straight sets: 6-3, 6-2.
 Daniil Medvedev (RUS) defeated  David Goffin (BEL) in straight sets: 6-2, 7-6(3), 6-3.
 Pablo Carreno Busta (ESP) defeated the often entertaining Italian,  Fabio Fognini, in four sets: 6-2, 6-4, 2-6, 6-4.
AMERICANS STILL IN THE DRAW
Brady/Riske advance to the third round in women’s doubles in a walkover. Azarenka/Barty their opponents withdrew before the scheduled match.
Sock/Withrow defeated Fritz (USA)/Norrie (GBR) in a tough three setter: 6-7(6), 6-3, 7-6(8). While Sock is struggling in singles, he continues to do well in doubles.
Townsend (USA)/Sasnovich (BLR) defeated  Hozumi/Rosolska in straight sets 6-2, 7-6(6).
 Ram (USA)/ Salisbury defeated Cuevas/Verdasco 6-3, 6-2.
 Venus Williams (USA) lost easily to  Simona Halep (ROU) in straight sets: 2-6, 3-6. Next up for Halep will be sister,  Serena Williams (USA). Williams leads their head-to-head 8:1; however, a lot has changed since they last played in 2016.
Can Serena Williams pull off the upset, or will Halep knock both sisters out of the Australian Open?
SOURCE OF IMAGE: serveandrally original (Simona Halep)