 Each group contained two seeded teams and two unseeded teams.Only four matches were scheduled for each group, each pitting a seeded team against an unseeded team (this contrasts with a conventional round-robin in which every team plays every other team, which would have resulted in six matches in each group).In a further oddity, extra time would be played if the teams were level after ninety minutes in the group games, with the result being a draw if the scores were still level after 120 minutes.