1, Higher number of points obtained in the matches played between the teams in question;
2, Superior goal difference resulting from the matches played between the teams in question (if more than two teams finish equal on points);
3, Higher number of goals scored in the matches played between the teams in question (if more than two teams finish equal on points);
4, If, after having applied criteria 1 to 3, two teams still have an equal ranking, criteria 1 to 3 are reapplied exclusively to the matches between the two teams in question to determine the final rankings of the two teams. If this procedure does not lead to a decision, the following criteria 5 to 9 apply in the order given:
5, superior goal difference in all group matches;
6, higher number of goals scored in all group matches;
7, position in the Uefa national team coefficient ranking system;
8, fair play conduct of the teams (final tournament);
9, drawing of lots.
Quick explanation (sorry it's only applied to group B, but Portugal's the main reason I went to all this trouble):
- Criteria 1-3 are only used for matches between the teams in question. So, if 3 teams have the same number of points and the fourth one has a different number, the match results with team 4 don't matter at all. Example: Portugal has 3 points, Denmark has 3 points, Germany has 3 points, Holland has 0. If the group stage ended today, match results against Holland wouldn't matter at all. The only goals used would be the ones scored in matches between Portugal, Holland and Germany.
- After - and only after - criteria 1-3 are applied and two teams still tie is criteria 1 re-applied. Again, group B example. Germany beat Portugal, Portugal beat Denmark. Now, assuming both Portugal and Denmark win next sunday, all three teams will have six points a piece. If Denmark wins 1-0, all teams will have a goal difference of 0. Portugal will get first place and Denmark will go through because it's back to criteria #1. If Denmark wins 2-0, 2-1 or 3-1 Denmark gets first place and Portugal gets second (even though Germany beat us) because criteria 2-3 are applied before re-applying #1. If Germany loses by a one goal difference but scores more than 2 goals, Portugal are out because of criteria #3 and if Germany lose by a one goal difference and score 1 goal then Portugal is out because it's back to criteria #1 .
- Criteria #7: I'm not sure this is the current ranking, but it's the most recent I could find. Someone correct me if I'm wrong, plz.
- I don't know why there's criteria 8 and 9 either. It's not as if people can actually tie in the UEFA ranking, but whatever. I also don't know how fair play is evaluated either.
I hope this helped at least one person.
EDIT ONE THING: Guys, these are the current rules. Article 8.07 of the EURO 2012 regulation pdf (approved in 2010) doesn't list criteria #4, but if you scroll all the way down there's an ammendment from March 2012, to come into effect immediately, adding it ;) Hope that cleared it!