 Many of the AFA teams revived, with slight alterations, the names of WFL teams that had resided in its respective cities, and several of the AFA's key personnel had previously served in similar capacities with WFL teams.The league also caused significant problems for the lower levels of professional football.Its arrival resulted in the end of the ACFL and SFL, effectively killing minor-league professional football in the United States until the AFA's formation in 1979.