Australia’s puzzling batting against Pakistan has tipped Michael Clarke’s side closer to another huge defeat, having reached 8-239 in their first innings of the second Test.
Resuming on 1-22 on the third day of play, Australia lost four wickets before lunch and another three in the middle session.
Mitchell Marsh in his debut series has reached an unbeaten 75, including 11 fours and one six, and Peter Siddle is 23 not out.
Australia require a further 132 runs to avoid the follow on.
Pakistan, who made 6-570 in their first innings, lead the two-match series one-nil.
Skipper Misbah-ul-Haq is moving closer to becoming the first man to lead Pakistan to a Test-series win over Australia since 1994.
David Warner was the first to go on Saturday, departing for 19 after an ambitious attempted cut shot ballooned to point off the bowling of Rahat Ali.
Twenty20 sensation Glenn Maxwell playing an attacking innings of 37 off 28 balls before he aimed a mighty swipe to leg and was bowled by spinner Zulfiqar Babar.
Rahat also rattled the off stump of nightwatchman Nathan Lyon (15) and Zulfiqar removed Steve Smith lbw for a duck after Pakistan called for a video review.
Skipper Michael Clarke hit seven boundaries in his 47, losing his middle stump to a savage in-dipper from Imran Khan at 6-164.
Gutsy wicketkeeper/batsman Brad Haddin, who injured his right shoulder during Pakistan’s first innings, scored 10 runs before he was bowled by legspinner Yasir Shah off an inside edge.
Before he’d even got off the mark, Mitchell Johnson went for a big slog sweep and was caught at mid-wicket at 8-199.
Imran, Rahat, and spinners Yasir and Zulfiqar have two wickets each.