Australia stretched its lead to 172 runs against England for the loss of David Warner's wicket by tea on day three Friday of the second Ashes test.
With a first-innings lead of 91, Australia crawled to 81-1 in its second innings.
Usman Khawaja was on 45 and Marnus Labuschagne on 8 after overturning a leg before decision against him on 3.