The opening Test at The Gabba went into fast-forward mode on day two with 12 wickets going down in blameless conditions.
England collapsed in spectacular fashion during the afternoon session, all out for 136 having been 82-2 at one point.
That represented a first-innings lead of 159 for Australia, which openers David Warner (45no) and Chris Rogers (15no) extended to 224 as the home side reached stumps at 65-0 in their second innings.
We take a look back on the action with a range of opinion, analysis and video.
Change of pace
Arriving at the ground on Friday morning, England's players knew they were in a strong position to press home an advantage that had been hard-earned by their bowlers on day one. All seemed to be going to plan early on; they picked up Australia's final two first-innings in the first half-hour, Brad Haddin last out for 94. England lost Alastair Cook and Jonathan Trott before lunch but Michael Carberry - making his second Test appearance almost four years after the first - was looking solid and had been joined by Kevin Pietersen.
Then it all changed. Australia claimed six wickets for nine runs as England went from 82-2 to 91-8 in less than 10 overs. Mitchell Johnson was the chief destroyer, finishing with 4-61. England's day got even worse as, after some brief resistance from Stuart Broad (32) got them up to 136, Warner set about increasing Australia's lead with a flurry of attacking strokes late in the day. Click here for full match report and here for our Man of the Day feature.
After the latest in a series of England batting horror shows to start an overseas Test series in recent years, it was Carberry who was sent out to face the media and put a positive spin on events. The Hampshire opener, with 40, was the top scorer in the innings and - as his only previous Test cap came on the tour of Bangladesh in 2010 - is untainted by history. He said: "We know there is still three days to go in the game so we are not totally out of it yet. We have just got to come out tomorrow and fight hard... I came in at lunchtime and said to the guys that it is a good wicket but credit to the Australians they bowled well and we never really got away from them at any stage. It is easy to say we got stuck but if people put the ball in the right area they are going to make it difficult to score."
Shane Warne was impressed by the way Mitchell Johnson used the short ball to put England under pressure and thinks the tourists are in for more of the same as the series progresses. Warne said: "Australia had the X-factor of Mitchell Johnson bowling fast - he was bowling consistently around 90mph plus - and he got it right. He looked a completely different bowler; there was no-one who really looked comfortable against the short ball. Jonathan Trott looked horribly uncomfortable and fell back into his old ways of walking so far across that he had no balance at the crease; it always looked like he was going to get out somewhere at leg slip or caught down the leg-side." Click here to listen to Michael Atherton and Andrew Strauss discuss the day's events in our all-new Ashes podcast and here for Sir Ian Botham's take on England's batting collapse.
England may have lost all their wickets in a hurry on Friday but Pietersen at least showed his sense of humour remained intact during his interactions with Australia's fans. The Surrey batsman, making his 100th Test appearance, was blowing kisses to his new friends in the crowd and was even willing to try sign a few autographs.