The 1926 major league baseball season began on April 13, 1926. The regular season ended on September 29, with the St. Louis Cardinals and New York Yankees as the regular season champions of the National League and American League, respectively. The postseason began with Game 1 of the 23rd World Series on October 2 and ended with Game 7 on October 10. The Cardinals defeated the Yankees, four games to three.
The 1926 schedule consisted of 154 games for all teams in the American League and National League, each of which had eight teams. Each team was scheduled to play 22 games against the other seven teams of their respective league. This continued the format put in place since the 1904 season (except for 1919) and would be used until 1961 in the American League and 1962 in the National League.
Opening Day, April 13, featured all sixteen teams, continuing the trend which started with the 1924 season. The American League would see its final day of the regular season was on September 27, while the National League would see its final day of the regular season on September 29 with a doubleheader between the Philadelphia Phillies and Boston Braves. The World Series took place between October 2 and October 10.
August 26 – Dutch Levsen of the Cleveland Indians becomes the last pitcher to win both games of a doubleheader, hurling two 9 inning games back to back, winning 6–1 and 5–1.[18][19] Levsen is also the last pitcher to throw two nine-inning complete games on the same day.[19]