Brazil scored after 12 seconds against Australia before completing a 4-0 rout in a friendly on Tuesday to hand the hosts a wake-up call before they leave for the Confederations Cup where they face Germany in their opener.
The Socceroos got off to a terrible start when centre back Bailey Wright gave away possession with the second pass of the game, allowing Diego Souza to hammer home a low shot to groans from most of the 49,000 fans at the Melbourne Cricket Ground.
Australia, who play world champions Germany in Group B at the Confederations Cup in Russia on Monday, entered the stadium with cautious optimism after last week’s win over Saudi Arabia reignited hopes of a fourth straight World Cup appearance.
Australia were humbled 6-0 away by five-times world champions Brazil when the teams last met in 2013, which was a prelude to former coach Holger Osieck’s dismissal and replacement by Postecoglou.
Postecoglou will wake up to some stinging headlines but he was philosophical in defeat, and said responsibility for the second half blow-out lay with him making a raft of changes.