Labuschagne has been moved up the order to accommodate the return of Cameron Green, who underwent back surgery in October and was ruled out of the home season, while Hazlewood is fit again after a calf injury to replace of Scott Boland.
"Cam Green has been coming back in great form in the last few weeks and we thought he deserved a spot in the batting lineup. We thought three probably suits him best," Cummins told a press conference.
"For Marnus moving one spot up, it's not too different to batting at three. He's done well here in England in the past."
Leaving out Boland, who had been one of the heroes of Australia’s 3-1 test series win over India this year, had been a difficult decision.
--Reuters--