The league was known as the American Professional Football Association (APFA) during the 1920 and 1921 seasons
z: best record, c: conference winner, y: division winner, w: wildcard, x: clinched playoff spot
RetroSeasons
RetroSeasons recaps past sports seasons through stories, photos, videos, and stats from every team, league, and stadium in history. Coverage includes the NBA, NFL, MLB and NHL, as well as vintage media from defunct teams and leagues.
Dayton Triangles
1921 NFL Playoffs