Other football leagues in 1937:    
NFL

1937 AFL2 Season

6 teams competed during the regular season
Los Angeles Bulldogs finished in 1st place to claim the championship

League Note
Three weeks into the 1937 season, the poorly-drawing Pittsburgh Americans folded while suffering the results of player raids by NFL teams. The AFL folded shortly thereafter, with most of the other teams joining the evolving American Professional Football League (APFL)

Commissioner