The league's twenty teams were divided into two conferences (Atlantic or Pacific), playing a total of 240 matches.
Points were awarded for wins (six) and each goal (up to three) regardless of results; ties in regulation were decided by 15 minutes of sudden death overtime followed by a penalty shootout from 35 yards (105 ft).
[1] The Toronto Metros-Croatia defeated the Minnesota Kicks in the Soccer Bowl on August 28 to win the championship.
The Tampa Bay Rowdies finished the regular season with the best record, giving them consecutive titles in three different domestic NASL competitions.
Since NASL teams at that time did not participate in the U.S. Open Cup, this would be the closest one would ever come to achieving any sort of a North American treble.