Chris
There are 2 scenarios
Lets assume both England and USA both win their game.
If both England and USA win by the exact same scoreline then USA finish top of the group and England finish 2nd.
Very simply for England to finish top they will need to win by 1 more goal than USA. ie England win 2-0 and USA win 1-0 then England win the group.

However If England win 4-3 and USA win 1-0 then England finish top of the group since they would have scored 5 goals against the USA 4 goals. (thats where you get the 3 goal difference from)
If England win 3-2 and the USA win 1-0 then we go to drawing lots since they both have the same goals scored and goal difference

Clear as mud eh?



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