Major League Baseball Facts
Highest level of professional baseball in the world
- Major League Baseball (MLB) is the highest level of professional baseball in the world, consisting of teams that play in the National League and the American League.
- MLB constitutes one of the major professional sports leagues of the United States and Canada. It is composed of 30 teams — 29 in the United States and 1 in Canada.
- MLB players make 1,000 times more than the workers in Costa Rica who make their baseballs.
- MLB is governed by the Major League Baseball Constitution that has undergone several incarnations since 1876 with the most recent revisions being made in 2005.
- The chief executive of MLB is the commissioner. There are six executive vice-presidents in charge of the following areas: baseball development, business, labor relations and human resources, finance, administration (whose vice-president is MLB's Chief Information Officer), and baseball operations.
- The multimedia branch of MLB is New York–based MLB Advanced Media, which oversees MLB.com and each of the thirty teams' websites.
- As of the 2011 season, MLB is divided into the American League (14 teams) and the National League (16 teams).
- On January 14, 1942, MLB Commissioner Kenesaw Mountain Landis wrote a letter to President Franklin D. Roosevelt regarding the continuation of baseball during the war, called the Green Light Letter.
- With the International Baseball Federation, MLB also manages the World Baseball Classic.