5. The ranking of each team in each group shall be determined as follows:
a) greatest number of points obtained in all group matches;
b) goal difference in all group matches;
c) greatest number of goals scored in all group matches.
If two or more teams are equal on the basis of the above three criteria, their rankings shall be determined as follows:
d) greatest number of points obtained in the group matches between the teams concerned;
e) goal difference resulting from the group matches between the teams concerned;
f) greater number of goals scored in all group matches between the teams concerned;
g) drawing of lots by the FIFA Organising Committee.
你说的情况，那美国和加纳各得4分，然后再看b）。那么goal differential 美国累计就是0，加纳累计就是+1。美国完戏。
这些规则里面没有说牌牌啥的。