The World Series is the annual championship series of Major League Baseball (MLB) in North America, contested since 1903 between the American League (AL) champion team and the National League (NL) champion team. The winner of the World Series championship is determined through a best - of - seven playoff, and the winning team is awarded the Commissioner 's Trophy. As the series is played during the fall season in North America, it is sometimes referred to as the Fall Classic.
who gets to play in the world series
American League (AL) champion team National League (NL) champion team