The 1937 major league baseball season began on April 19, 1937. The regular season ended on October 3, with the New York Giants 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 34th World Series on October 6 and ended with Game 5 on October 10. In the fifth iteration of this World Series matchup, the Yankees defeated the Giants, four games to one, capturing their sixth championship in franchise history, and their second in a four-World Series run. With this victory, the Yankees became the team with the most World Series victories, a feat that continues today.