What's at stake for the Socceroos

WORLD CUP QUALIFYING PERMUTATIONS FOR THE SOCCEROOS

Australia play Thailand on Tuesday night in their final group stage qualifier on the road to Russia.

But they won't know their qualifying fate until Saudi Arabia host Japan in the early hours of Wednesday morning (AEST).

Here are the scenarios awaiting Ange Postecoglou's side...

IF AUSTRALIA WIN

Saudi Arabia win: Australia need to better Saudi Arabia's winning margin by at least two goals to qualify directly. Otherwise, the Socceroos are into the play-offs.

Saudi Arabia draw or lose: Australia qualify directly.

IF AUSTRALIA DRAW

Saudi Arabia win or draw: Australia into play-offs.

Saudi Arabia lose: Australia qualify directly.

IF AUSTRALIA LOSE

Australia into the play-offs - unless United Arab Emirates beat Iraq and there's a goal difference swing of seven - which would end the Socceroos hopes of reaching the World Cup.

CURRENT GROUP B STANDINGS

1. Japan - 20 points - 17 goals for:6 goals against, +11 goal difference

2. Saudi Arabia - 16 - 16:10, +6

3. Australia - 16 - 14:10, +4

4. United Arab Emirates - 13 - 10:12, -2