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 Brooklyn Robins, managed by Wilbert Robinson, missed the postseason after finishing the MLB regular season in 5th place in the NL with a 57-69 record.