Goal Australia predicts which players will survive the cut to a final squad of 23 and who will be in the starting XI against Chile on June 13
Having started against Costa Rica in November and Ecuador in March, Mat Ryan is now effectively first choice. The former Central Coast Mariner has starred at Club Brugge this term, helping the team to challenge for the title and receiving an award as the Pro League players' goalkeeper of the season.
Borussia Dortmund's Mitch Langerak could well be second in line despite only playing intermittently, with Eugene Galekovic to provide experienced cover. Mark Birighitti, linked with a move to Bayer Leverkusen from Newcastle Jets, is unlikely to make the 23-man final squad.
Ivan Franjic will start at right-back ahead of Luke Wilkshire, who has been in and out of the Dinamo Moscow starting XI since the Russian Premier League kicked off March.
Curtis Good hasn't played since injuring himself in his impressive international debut against Ecuador in March. But Ange Postecoglou liked what he saw enough to cite the performance of the centre-back as reason to put yet more of his faith in youth.
Good, if fit, will be partnered by the technically gifted Matthew Spiranovic in the middle, with Ryan McGowan of Shandong Luneng likely to be next in line.
Alex Wilkinson plays at a high level with K-League side Jeonbuk Motors, but will his lack of pace count against him? The 29-year-old could be competing with Preston's Bailey Wright to avoid the chop.
Jason Davidson is a certain starter at left-back with no other dedicated left-sided fullback in the squad. If the Heracles player is injured, Postecoglou will be forced to improvise, and could even consider playing with three centre-backs and two wing backs.
If he recovers from a groin injury sufficiently, Crystal Palace's Mile Jedinak is a certain starter in holding midfield and is likely to be joined by Mark Milligan. Matt McKay's work-rate and versatility count strongly in his favour. That leaves James Holland, Adam Sarota and Massimo Luongo fighting to earn a place in the final 23 as a back-up central midfielder. Josh Brillante is likely to go home when the squad is cut to 27.
Further forward, Tom Rogic's disappointing, injury-hit 2014 may have seen him slip behind the venerable Mark Bresciano as first-choice number 10. Only one of Swiss-based duo Oliver Bozanic and Dario Vidosic is likely to go to Brazil as cover for that spot.
Tommy Oar is guaranteed to start on the left of midfield, but the wide right role is up for grabs with Robbie Kruse injured. Mathew Leckie struggled there against Ecuador, opening the door for James Troisi and Ben Halloran, who have both been in good form.
As if he needed to, Tim Cahill demonstrated his continuing value with two goals against Ecuador and will start up front against Chile. Leckie is perhaps next in line due to his work-rate and mobility. That leaves Josh Kennedy, experienced but aging, potentially facing the axe from the final 23-man squad, with Adam Taggart's versatility counting in his favour.