Australia 311 for 5 (Khawaja 126*, Carey 52*, Head 50) trail England 393 for 8 dec (Root 118*, Bairstow 78, Crawley 61, Lyon 4-149) by 82 runs
Birmingham: England wasted chances and were defied by a classy century from Australia's Usman Khawaja on a riveting second day of the first Ashes Test at Edgbaston.
Khawaja batted throughout the day for his unbeaten 126, the left-hander's first Ashes ton in England guiding Australia to 311-5, just 82 runs adrift.
He was bowled by a Stuart Broad no-ball on 112, one of four errors from England that also included Jonny Bairstow missing two opportunities behind the stumps.
In an electrifying morning session, England used favourable overhead conditions to reduce the tourists to 67-3 in reply to their 393-8 declared.
The renewal of Broad's battle with David Warner resulted in a 15th dismissal in Test cricket and, next ball, Broad sent Edgbaston into rapture by having Marnus Labuschagne brilliantly caught by Bairstow.
Ben Stokes, proving his fitness to bowl, trapped Steve Smith lbw for 16.
But Khawaja stood firm, adding 81 with Travis Head, who made 50, and 72 with Cameron Green. Both Head and Green were removed by Moeen Ali on his return to Test cricket.
Even at 220-5, Australia were on the back foot, only for Khawaja to add another unbroken stand of 91 with Alex Carey, the beneficiary of a Bairstow drop in his 52 not out.
By the end, Australia had moved to a position from where they can take a first-innings lead, which could be crucial on an extremely dry pitch that seems set to deteriorate later in the match.