Expansion club New York Cosmos was added to the NASL during the season.
Note1: Flags indicate national team as has been defined under FIFA eligibility rules.
The New York Cosmos and the Puerto Rico Islanders did not participate in the spring season.
Soccer Bowl 2013 was contested by the winners of the spring and fall seasons.
[10][11][12] Source:[13] (Minimum of 10 Games Played) For 2013 the teams had the following average attendance:[15]