He founded the Arena Football League with four teams : the Pittsburgh Gladiators , Denver Dynamite , Washington Commandos , and Chicago Bruisers .
Following the successes of his trial - run games , Foster moved ahead with his idea for arena football .
Foster founded the Arena Football League with four teams : the Pittsburgh Gladiators , Denver Dynamite , Washington Commandos , and Chicago Bruisers .
Following the successes of his trial - run games , Foster moved ahead with his idea for arena football .