(1) Considering only games in which tied teams played, highest
points per game, (2) considering all games played, best average
goal differential per game (goals scored minus goals allowed, with a
maximum of +5 or -5 per game), (3) highest average goals scored
per game, (4) coin toss. Once any of these rules breaks a tie,
teams are reseeded and the rules reapplied from the beginning for
any remaining tied teams.