Australia hit back late on day one of the third Ashes Test at the WACA Ground after England off-spinner Monty Panesar produced one of the finest Ashes debuts to help skittle the hosts for 244.
Veteran Glenn McGrath and Brett Lee responded to their side's meagre first innings total by taking the wickets of Alastair Cook (15) and Ian Bell (0) respectively as England finished at 51-2.
It could have been even better for Australia had Shane Warne (0-8 off two overs) taken a catch off a Paul Collingwood edge from Stuart Clark in his first over - when Clark later beat the Englishman's bat twice more.
Lee delivered the near-perfect ball to Bell, which was on line and rising, and the Englishman got a slight edge through to Adam Gilchrist behind the stumps after McGrath had Cook caught in the gully by Justin Langer.
Opener Andrew Strauss (24 not out) and Collingwood (10 not out) will enter the second day with England trailing by 193, as the tourists look to capitalise on their bowling efforts.
Earlier, Panesar claimed five wickets; Warne (25) and Lee (10) in the final session, Gilchrist (0) and Andrew Symonds (26) in consecutive overs shortly before tea, and Langer (37) in the final over before lunch.
Mike Hussey played a lone hand for the Australians in front of a record WACA Test crowd of 24,224, the local hero making an unbeaten 74 off 161 balls - his fourth half-century in what is his first Ashes series.
Paceman Steve Harmison also responded to criticism of his performances so far in the series by capturing 4-48 off 19 overs.
Entering the match with one wicket under his belt in the first two Tests, Harmison dismissed world No.1 batsman Ricky Ponting for two in the first session before taking a reflex catch off his own bowling to get rid of Michael Clarke (37) in the 40th over.
He then cleaned up the tail by sending Stuart Clark and McGrath back to the pavilion for three and one respectively.
Panesar, who had figures of 5-92 off 24 overs, took little time to adjust to the pressure of playing in one of the most highly-anticipated series in history, bowling Langer in his second over.
The 24-year-old removed Test inclusion Symonds caught behind - albeit after wicketkeeper Geraint Jones juggled the attempt - in the 50th over, just two overs after the Queenslander had plundered 17 runs off his bowling when he struck two straight sixes.
Hussey (10 fours) lacked his usual flare, with the Australian scoreline forcing the left-hander to dig in as the England bowlers, led by Panesar and Harmison, gave the tourists the upper hand on a warm, sunny day in Perth.
Harmison claimed his first wicket when he trapped the Australian skipper in front in the 14th over to make the score 2-54, after opener Matthew Hayden (24) edged a ball from Matthew Hoggard (1-40 off 12 overs) to Jones in the 11th over.
James Anderson's replacement, Sajid Mahmood, bowled seven wicketless overs for 28 runs, while skipper Andrew Flintoff (0-36 off nine overs) used himself sparingly.
Hayden and Langer jumped Australia out of the blocks quickly after Ponting elected to bat first, moving the score to 47-0 in the 11th over. But the run rate became irrelevant as 'Monty' weaved his magic.
Australia has a 2-0 lead in the best-of-five series as it looks to reclaim the Ashes it lost in England last year.
