The 1930 Major League Baseball season was contested from April 14 to October 8, 1930. The St. Louis Cardinals and Philadelphia Athletics were the regular season champions of the National League and American League, respectively. The Athletics then defeated the Cardinals in the World Series, four games to two. Offense dominated this season. The National League batted .303, with six teams batting better than .300. The American League came in at .288, with three teams batting over .300.