Stuart Broad ignites England's first Test victory hopes with key double strike

Broad got England's 'fortress' rocking in the evening session as he had Marnus Labuschagne and Steve Smith - numbers one and two in the Test batting rankings - caught behind during an electric spell.

With adrenaline coursing through his veins Broad would have loved nothing more than a crack at the man who occupies third place on that list, but Australia opted to shield Travis Head from the late pressure and sent out Scott Boland as nightwatchman.

Australia ended a gripping fourth day on 107 for three chasing 281, with all results on the table heading into what is set up to be a classic finale.

The tourists had made an assured start to the chase, with Usman Khawaja and David Warner putting on 61 for the first wicket before Ollie Robinson got one to clip the latter's outside edge to get his side up and running.

England had earlier been bowled out for 273, an erratic but entertaining innings, punctuated with dashing strokeplay but haunted by a feeling of impermanence.

There was not a single half-century on the card, with Joe Root and Harry Brook both reaching 46 and Ben Stokes contributing 43.

Had any of the three lasted the course, the game might have slipped away from Australia entirely, but Root was stumped for the first time in his 131 Test career as he charged Nathan Lyon and Brook tried too hard to generate a boundary that was not on offer.

Stokes, whose attacking principles run through the DNA of his side, played a notably responsible knock but was stopped in his tracks by his excellent opposite number Pat Cummins.