Brief scores: England 305/4 (Dawid Malan 110 not out, Jonny Bairstow 75 not out; Mitchell Starc 2/79) against Australia. "It's obviously not comfortable - you don't really feel like you're enjoying it at the time but looking back it was great fun to get through those situations".
Bairstow, promoted to sixth in the order, all but played onto his stumps during all-rounder Mitchell Marsh's third over when on 39, but the ball skipped just over the bails after rebounding off his pads. Malan scored a half-century in the opener at the Gabba and rued not going on to make a bigger total. I don't think there's anyway you can overturn the decision on that evidence'. He joined Malan after opener Mark Stoneman was contentiously dismissed for 56.
Stoneman was dropped twice on 52 and struck on his helmet by a fierce delivery while on the same score. He received medical attention on the field.
But after initially hesitating, Stoneman walked off - a later replay from a different angle showed the correct call was made as the ball flicked the opener's glove which was holding his bat. Players in the England dressing room were visibly upset over the decision.
England started the day positively, with Stoneman stroking four boundaries in the space of five balls, including three in succession against Starc.
Stoneman shared a 63-run second-wicket stand with James Vince (25), which was broken by Hazlewood just before lunch.
Root was out softly for 20, caught down the legside by wicketkeeper Tim Paine, and Stoneman followed in controversial circumstances.
After Root decided not to send the home side in again, as he ill-fatedly did in Adelaide in the second Test, Cook was trapped lbw by left-arm paceman Mitchell Starc for just seven and cut a disconsolate figure as he trudged off.
But it was also rocked Thursday by British newspaper claims that it had been targeted by match-fixers.
The International Cricket Council immediately launched an investigation, supported by the cricket boards of Australia and England.
"From my initial assessment of the material, there is no evidence, either from The Sun or via our own intelligence, to suggest the current test match has been corrupted", ICC anti-corruption unit general manager Alex Marshall said.