Australian midfielder James Troisi believes coach Ange Postecoglou's controversial 3-4-3 formation functions well and there is no chance of it changing ahead of Tuesday's crunch World Cup qualifier against Thailand.
The green-and-gold have only won two of their eight matches since switching to the system in March and went down 2-0 to Japan in Saitama on Thursday - a result which complicated their path to Russia.
Troisi threw his support behind the tactics and reminded everyone of Postecoglou's single-minded thinking when it came to decisions.
"I think everyone knows the boss by now. Nothing’s going to change," Troisi told reporters.
"It works [the game plan and new 3-4-3 formation]. It’s shown it works.
"Obviously against different opposition it’s a little more difficult. And on Thursday night it was quite difficult and all credit to the Japanese."
If they manage to get a win against Thailand at Melbourne's AAMI Park, the Socceroos will rely on Japan to get a result versus Saudi Arabia in Jeddah on Wednesday morning (AEST).
"We’re in a little tricky situation. The last couple of days have been a little bit tough. But we know what we have to do and to get it done," Troisi said.
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"I guess it’s a bit of a do-or-die situation. Not that we don’t have anything to lose, but we have everything to gain.
"And on Tuesday night we have no choice but to be on fire."