Duckworth breaks through after rain delays in Brisbane

The wild storms that hit south-east Queensland over the Christmas period have also caused chaos for tournament organisers who face a backlog of matches to get through this week.

Duckworth did his best to help, taking just 63 minutes to see off the 53rd-ranked Wolf with a clean and efficient display featuring no service breaks, seven aces and 81 per cent of first-serve points won.

The world No.116's reward in reaching the last 16 is a tie against unseeded German Yannick Hanfmann, who surprised American fifth seed Sebastian Korda 7-5 6-4.

Five other home hopes were scheduled for action on Tuesday, including two all-Australian showdowns between Thanasi Kokkinakis and Rinky Hijikata and Jordan Thompson against Aleksandar Vukic.

If the weather holds, Jason Kubler will take on Russia's 2021 Australian Open semi-finalist Aslan Karatsev, the tournament's eighth seed.

The great Rafael Nadal makes his much-anticipated comeback from almost a year out with a hip injury against Australia's former US Open champion Dominic Thiem in the feature men's night match on Tuesday.