==History==Prior to 1969, the champion of both leagues was determined by regular season win-loss record. In instances of tiebreakers, there were tiebreaker contests held, which served as unofficial postseason games. The American League held a single-game tiebreaker in 1948 to determine the league champion for that season. The National League held a best-of-three tiebreaker series in 1946, 1951, 1959, and 1962. - Source: Wikipedia
