The 1929 Major League Baseball season was contested from April 16 to October 14, 1929. The Chicago Cubs and Philadelphia Athletics were the regular season champions of the National League and American League, respectively. The Athletics then defeated the Cubs in the World Series, four games to one. Babe Ruth hit his 500th career home run this season on August 11th at Cleveland. Game 4 of the World Series featured a historic 10-run rally by the Athletics, nicknamed "The Mack Attack," after the team's manager, Connie Mack.