Nashville Rebels

1938 standings
Playoffs: Louisville defeated Chicago 13-0; St. Louis defeated Nashville 19-13 Championship: Louisville defeated St. Louis 3-0 to win fourth consecutive championship of MFL/AFL

Following the three Midwest Football League champions from 1935 to 1937, the Tanks became the first professional football team to win four consecutive league championships. Only the Cleveland Browns (AAFC 1945-1949, NFL 1950) have managed to match this feat so far.