Australia closed day two of the fifth and final Ashes Test in Sydney 311 runs ahead after bowling England out for just 155 and then reaching 140 for four in their second innings.
England resumed on eight for one but were again shot out for a meagre total, slipping to 23 for five and 62 for six before Ben Stokes (47) and Stuart Broad (30) offered some resistance.
Ryan Harris (3-36), Mitchell Johnson (3-33) and Peter Siddle (3-23) all took three wickets to dismiss England in just 58.5 overs.
James Anderson (2-36), Broad and Stokes then struck to make things difficult for Australia's top order, but held together by Chris Rogers, unbeaten on 73 at stumps, they forged well clear and may already have more than enough runs needed to secure the coveted 5-0 whitewash.
The day began appallingly for England as they lost four wickets for 15 runs as Alastair Cook (7), James Anderson (7), Kevin Pietersen (3) and Ian Bell (2) departed to leave them reeling at 23 for five.
Cook was first to go when he shouldered arms to Harris only for the ball to come back in and trap him in front while nightwatchman Anderson edged Johnson to Michael Clarke at second slip.
Harris lured Pietersen into taking on a big drive and he could only edge to Shane Watson before Bell was surprised by one from Siddle that he could only fend to Brad Haddin.
Debutant Gary Ballance helped restore some order to England's batting along with Stokes, but he managed 51 balls before Nathan Lyon had him caught behind for 18.
Jonathan Bairstow made 18 in one fewer ball than Yorkshire team-mate Ballance, putting on 49 with Stokes for the seventh wicket, which fell at 111 - that unluckiest of scores for England players. Bairstow was caught by George Bailey close to the wicket as he badly mistimed a drive off Siddle.
Five balls later, Stokes was on his way, having made 47 in 101 balls, bowled offering no stroke to Siddle.
After Scott Borthwick (1) was caught by Steve Smith off Harris, Broad decided to throw the bat, crashing an unbeaten 30 in 22 balls with four fours and a six until Boyd Rankin (13) was bowled by Mitchell Johnson to bring England's latest tale of batting woe to an end.
David Warner made his customary fast start and hit 16 in 20 balls before he was trapped in front by Anderson, and England followed this up by removing Watson (9), Clarke (6) and Smith (7) cheaply.
Watson was brilliantly caught by Bairstow, diving to his right to pick up an edge off Anderson, Clarke played a poor shot to be caught behind off Broad and Stokes had Smith caught by Cook off one that nipped back.
However, Rogers stood firm at the other end, making his way to a sixth Test half-century, and managing to score seven runs in one shot as fortune favoured him.
He had faced 89 balls and hit nine fours while alongside him at the end of play was Bailey, who had made 20 in 32 balls.
Smith's century on day one along with Brad Haddin's 75 helped Australia recover from 97 for five to post a competitive score - while they were able to bounce back having lost early top-order wickets, England were unable to do so when they found thesmelves in trouble today.
© Cricket World 2014