The 1934 major league baseball season began on April 17, 1934. The regular season ended on September 30, with the
St. Louis Cardinals and
Detroit Tigers as the regular season champions of the
National League and
American League, respectively. The postseason began with Game 1 of the 31st
World Series on October 3 and ended with Game 7 on October 9. The Cardinals then defeated the Tigers, four games to three.
The 1934 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 17, featured all sixteen teams, the first since the
1931 season. The final day of the regular season was on September 30, which also saw all sixteen teams play on the final day of the season, continuing the trend which began with the
1930 season. This was the second time that both Opening Day and the final day of the season saw all sixteen teams play, the previous being in
1931. The
World Series took place between October 3 and October 9.