The 1960s -- The NFL surpasses baseball in popularity By Thomasdd Aug 1, 1960 The NFL has 13 teams Dallas joins the NFL to increase the number of teams to 13 Sep 1, 1960 The American Football League begins Now there are two pro football leagues, the NFL and the AFL Dec 1, 1960 Baseball is more popular than football Polls show pro baseball is more popular than pro football by 34 to 21 percent.
