1937 was the third and final season for the Midwest Football League, as it would become the American Football League in 1938. The Cincinnati Treslers were not the only MFL team to leave the league in 1937. The Springfield Bicos and Columbus Bobos also left, while the Ashland Armcos (named after a local steel manufacturing business) joined. With new player-coach John Wiethe, the Cincinnati Models returned to its winning ways, including a 95-7 demolition of the Indianapolis Indians, which failed to win a game for the second consecutive year. Only a loss to Ashland kept the Models from another unbeaten regular season. The 1937 league championship game was a rematch of the two team who battled for the title in 1936, with the same result: the Louisville Tanks shut out the Models to win its third title in the Tanks' third season of competition. After the conclusion of the 1937 season, change was inevitable for the MFL as the second AFL imploded. Indianapolis left after two years without a win, Ashland departed after one winning season. The MFL quickly adopted the name of the recently deceased league and expanded its reach by adding teams in East Chicago, Indiana and Nashville, Tennessee. The Cincinnati Bengals (formerly of the second AFL) were asked to join the newly minted American Football League… and opted to remain an independent team instead.