The Socceroos have no injury concerns, but possible suspensions from yellow cards will now come into play.
Vince Grella, John Aloisi, Craig Moore and two-goal hero Tim Cahill all picked up cards in the match against Japan.
A second yellow card in the group stage earns the player an automatic one-match ban and coach Guus Hiddink says this will affect his selection of players to meet Brazil.
“I'm proud of them, our first victory in a World Cup. One of the negative aspects of yesterday's game was that we have some silly yellow cards which we talked about before the game, so there is a little bit of criticism from my side. I will think about if everyone can play in that game. John Aloisi's card was not a yellow card, it was bad judging from the referee. But other ones I thought were stupid. I have to think strongly if I can use all the players against Brazil,” said Hiddink.