De Minaur is the top returner on the ATP tour, winning 32.8 per cent of games against serve over the past 12 months. Two years ago that would have been a major weapon against Sinner but less so now.
World No. 8 AlexdeMinaur will face the unseeded American ... as no Australian has reached the men's singles quarterfinals at the MelbournePark since Nick Kyrgios did it in 2015.
MELBOURNE - AlexDeMinaur kept the home flag flying at the Australian Open as he beat rising American Alex Michelsen 6-0 7-6(5) 6-3 to reach the quarter-finals for the first time on Monday.