List of Major League Baseball tie-breakers

A tie-breaker was required in Major League Baseball (MLB) when two or more teams were tied at the end of the regular season for a postseason position such as a league pennant (prior to the introduction of the League Championship Series in 1969), a division title, or a wild card spot. Until 2022, both the American League (AL) and the National League (NL) used a one-game playoff format for tie-breakers, although the NL used a best-of-three series prior to 1969, when the leagues were split into divisions.

Source: Wikipedia — List of Major League Baseball tie-breakers (CC BY-SA 4.0)