Stay updated with breaking news from Alison Mitchell Alisonmitchell. Get real-time updates on events, politics, business, and more. Visit us for reliable news and exclusive interviews.
Labuschagne had counterpunched effectively with some glorious boundaries, but the duo's eventual 71-run stand was brought to a sudden end with a bizarre dismissal for Australia's No 3.
Khawaja's innings was even more special as the batter scored runs at a strike-rate of more than 75.
Australia have won the first Ashes Test in Brisbane after beating England by nine wickets inside four days to take a 1-0 series lead to Adelaide after another batting collapse from the visitors.
Dawid Malan and Joe Root departed within the first hour of day four in Brisbane, sparking a collapse that saw them lose their final eight wickets for just 74 runs.