The regular schedule of 154 was shortened due to World War I, with teams playing between 123 and 131 games.
z: best record, c: conference winner, y: division winner, w: wildcard, x: clinched playoff spot
The 1918 Philadelphia Athletics, managed by Connie Mack, missed the postseason after finishing the MLB regular season in 8th place in the AL with a 52-76 record.