If Iceland and Argentina end up at four points each after the completion of the group stage, the tiebreakers might come into play.
The team with the better goal difference (GD) will proceed to the knockout stages. If both Argentina and Iceland end up having the same GD then it will boil down to the goals scored and the team which scored more goals in the group stage will proceed further.
If Argentina and Iceland remain tied even after the first two tie-breakers, then there will be just two things left to do.
First, the fair-play tiebreaker. The disciplinary records in the tournament will decide the fate of the teams. While a yellow card takes one point off the team’s total, an indirect (as a result of two yellow cards) and a direct red card take off 3 and 4 points respectively. The team with the highest total points remaining will advance.
If by any chance both the teams remain tied even after the fair-play tiebreaker, the only option left is a random drawing. The team with the better luck will go forward and the other team will have to head back home.