A win for Argentina could get them in first or second in the group, a draw could get them in second place and a loss would eliminate Argentina from the World Cup.
Argentina play Poland and Saudi Arabia play Mexico, with both games being played at the same time. Poland have four points and lead the group as Argentina are in second with three points and a plus one goal difference.
Third place in the group is Saudi Arabia who also have three points but a minus one goal difference and Mexico are last in the group with a minus two goal difference. Here are the standings:
Poland: 4 points, +2 goal difference
Argentina: 3 points, +1 goal difference
Saudi Arabia: 3 points, -1 goal difference
Mexico: 1 point, -2 goal difference
If Argentina win against Poland and Saudi Arabia win vs. Mexico, Argentina and Saudi Arabia would make it to the next round with goal difference deciding their standings. These would be the standings:
Argentina: 6 points
Saudi Arabia: 6 points
Poland: 4 points
Mexico: 1 point
If Argentina win vs. Poland and Mexico win vs. Saudi Arabia, Argentina and one of Poland or Mexico would make it to the next round with Argentina leading the group. Poland and Mexico would be decided on goal difference. These would be the standings:
Argentina: 6 points
Poland: 4 points
Mexico: 4 points
Saudi Arabia: 3 points
If Argentina and Poland draw with Saudi Arabia getting the win vs. Mexico, it would be Saudi Arabia and Poland into the next round of the World Cup. These would be the standings:
Saudi Arabia: 6 points
Poland: 5 points
Argentina: 4 points
Mexico: 1 point
If Argentina and Poland draw with Mexico getting the win vs. Saudi Arabia, Poland would lead the group with Argentina and Mexico tied on points and the better goal difference would qualify for the next round. These would be the standings:
Poland: 5 points
Argentina: 4 points
Mexico: 4 points
Saudi Arabia: 3 points
If Argentina and Poland draw with Saudi Arabia and Mexico drawing, Poland and Argentina would make it to the next round with Poland in first and Argentina in second in the group. These would be the standings:
Poland: 5 points
Argentina: 4 points
Saudi Arabia: 4 points
Mexico: 2 points
If Poland get the win vs. Argentina and Saudi Arabia get the win vs. Mexico, Poland and Saudi Arabia would make it to the next round of the World Cup. Here would be the standings:
Poland: 7 points
Saudi Arabia: 6 points
Argentina: 3 points
Mexico: 1 point
If Poland get the win vs. Argentina and Mexico get the win vs. Saudi Arabia, Poland and Mexico would make it to the next round at the World Cup. Here would be the standings:
Poland: 7 points
Mexico: 4 points
Argentina: 3 points
Saudi Arabia: 3 points
If Poland get the win vs. Argentina and Saudi Arabia vs. Mexico ends in a draw, Poland and Saudi Arabia would make it to the next round at the World Cup. These would be the standings:
Poland: 7 points
Saudi Arabia: 4 points
Argentina: 3 points
Mexico: 2 points