This is just a copy of a thread in the USYNT forum, but I figured it would be convenient to have in the official Group B forum also. Credit for the work can be given to both giffenbone and I, because we each separately figured these scenarios out.
Regulations of the Olympic Football Tournaments
http://www.fifa.com/mm/document/tour...fen%5f6198.pdf
Group tiebreakers, which are on pg. 31 of the rules, are:
1. total points
2. goal difference
3. goals scored
if two or more teams are still deadlocked
4. most points from matches involving the tied teams
5. greatest goal difference from matches involving the tied teams
6. most goals scored in matches involving the tied teams
7. fair play system (least yellow and red cards)
8. drawings
The following scenarios can occur in the final games.
US wins/Netherlands wins - US/Netherlands advances
US wins/Netherlands ties - US/Nigeria advance
US wins/Netherlands loses - US/Nigeria advance
US ties/Netherlands wins - nightmare scenario+
US ties/Netherlands ties - US/Nigeria advance
US ties/Netherlands loses - US/Nigeria advance
US loses/Netherlands wins - Nigeria/Netherlands advance
US loses/Netherlands ties - Nigeria/US advance
US loses/Netherlands loses - Nigeria/US advance
+This outcome which has Netherlands/Nigeria/US on 5 points has the following possibilities:
*Netherlands win by multiple goals or 1 goal by a score of 2-1, 3-2, etc. - Netherlands/US advance
*Netherlands 1-0 win, US/Nigeria tie of 0-0 - US/Netherlands advance, because of identical group stats FIFA fair play system determines 1st and 2nd
*Netherlands 1-0 win, US/Nigeria tie of 1-1 - US/Netherlands advance
*Netherlands 1-0 win, US/Nigeria tie of 2-2 - US advances, FIFA fair play system decides 2nd between Nigeria/Netherlands
*Netherlands 1-0 win, US/Nigeria tie of 3-3 or more - US/Nigeria advance
Netherlands - has to win to advance, can only win the group if US/Nigeria ends up as a tie and they beat Japan by specific margins
Nigeria - if they win US/Nigeria they get first, other outcomes with Nigeria advancing basically require a loss or tie for Netherlands
US - eliminated only with loss and Netherlands victory over Japan, nearly guaranteed first unless Nigeria game ends up a loss
Japan - hopefully goes all out against Netherlands