SECOND TEST, ADELAIDE, DAY THREE (Stumps):
England 551-6 dec v Australia 312-5
Matthew Hoggard took four wickets on day three of the second Ashes Test to keep England hopes high despite Ricky Ponting's Australian record 33rd ton.
Hoggard profited from cutting his pace and scrambling the seam
England made a perfect start as Hoggard dismissed Matthew Hayden for 14 and Damien Martyn for 11.
And the seamer returned with the second new ball to dismiss Ponting (142) and Hussey (92) after a stand of 192.
Australia closed the day on 312-5, trailing by 239, with Michael Clarke (30) and Adam Gilchrist (13) unbeaten.
Their first target remains the mark of 352 needed to avoid the follow-on, a point which would make the draw favourite.
Ponting's century was his 10th in 13 games, his second of the series so far and the 33rd of his 107-Test career, moving him clear of Steve Waugh as Australia's top centurion.
He and Hussey came together at 65-3, their stand spanning the next 60 overs, causing England to despair until Hoggard had Ponting caught behind with the second new ball.
Ponting should have gone on 35 when he pulled Hoggard to deep square leg, only for Giles to shell a chance over his head.
His decision to take a quick single to square leg on 46 could have backfired but Paul Collingwood's throw just missed the stumps.
Ponting survived a drop on 35 to bring up an Aussie record 33rd ton
Either side of that chance, Ponting found his feet with two boundaries off Anderson to bring up his fifty just before lunch, and settled in for a long afternoon.
His century came up just before the tea break, off 183 deliveries.
Hussey's watchful knock was ended eight overs after Ponting as he failed to get his bat out of the way and toe-ended onto his stumps.
The highlight was an audacious hook off a bouncer from Steve Harmison but there were just seven other boundaries on a slow outfield.
England had looked tired as the first ball grew older but their morning display was unrecognisable from the side that lost the first Test by 277 runs.
Harmison, who conceded 177 runs for a single wicket in Brisbane, appeared to be back in form, bristling with pace and, crucially, accuracy.
His afternoon spell of 0-14 off six overs included Hussey's six.
Left-arm spinner Ashley Giles, though, struggled to make an impression, and had to resort to bowling over the wicket on Ponting's leg stump.
Hoggard had looked innocuous bowling five overs on the second evening as the hosts reached the close 28-1.
But on Saturday morning he began to find some movement off the pitch by scrambling the seam and cutting his pace a little.
Left-hander Hayden was tempted into pushing at a delivery angled across him and leaving him a little, with Geraint Jones pouching the edge.
Martyn groped in ugly fashion at a ball well pitched up and edged to a diving Ian Bell at gully.