Based on the playoffs format arrangement, game seven — when necessary — is played in the ballpark of the team holding home-field advantage for the series.
That format has been used annually since then, with four exceptions: 1903, 1919, 1920, and 1921, which were contested as best-of-nine series.
A game seven cannot occur in earlier rounds of the MLB postseason, as the Division Series (best-of-five) and Wild Card Series (best-of-three) use shorter formats.
[60] Four teams have never played a game seven:Chicago White Sox, San Diego Padres, Seattle Mariners, Colorado Rockies.
Teams that have never played a game seven in a best-of-seven series are excluded.