The Third Men: Who will advance from the Euro 2016 groups (The Associated Press)

Getting to a round of 16 means the clear formula of the past two decades has been ditched. The best four third-placed teams at Euro 2016 will go through to the round of 16 but the final lineup will only emerge on Wednesday when the group stage ends. The teams from Group F - Hungary, Iceland, Portugal and Austria - playing on Wednesday may have an advantage by knowing exactly which kind of result they will need to progress to play a particular opponent in the knockout stages.