Novak Djokovic plays some of his best tennis to blow Australia's Alex De Minaur off the court in a one-sided rout on Rod Laver Arena.
Earlier Andrey Rublev saved multiple match points to advance past Holger Rune in a rollercoaster of a match.
And Australian duo Jason Kubler and Rinky Hijikata have once again come back from the brink to make the final eight in the men's doubles, with the pair on a path reminiscent of the one Nick Kyrgios and Thanasi Kokkinakis trod last year.