Major League Baseball, MLB is a professional baseball league consisting of teams that play in the American League and National League. Dating to 1901 and 1876 respectively the two leagues merged in 2000 into a single organization led by the Commissioner of Baseball, after 100 years as separate legal entities.
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 one in Canada. All teams in MLB play 162 games each season over six months from April through September. Five teams in each league advance to a four-round postseason tournament that culminates in the World Series, a best-of-seven-games championship series between the two league champions that dates to 1903.
See how each Major League Baseball team came to be in their city, their nickname and their facility.
First Professional Baseball Team
Beginning of MLB
Rise in Popularity and Babe Ruth
Breaking the Color Barrier
The following year, the Dodgers called Robinson up to the major leagues. On April 15, 1947, Robinson made his major league debut at Ebbets Field before a crowd of 26,623 spectators, including more than 14,000 black patrons. Black baseball fans began flocking to see the Dodgers when they came to town, abandoning their Negro league teams which they had followed exclusively. Robinson's promotion met a generally positive, although mixed, reception among newspapers and white major league players. Manager Leo Durocher informed his team, "I do not care if the guy is yellow or black, or if he has stripes like a fuckin' zebra. I'm the manager of this team, and I say he plays. What's more, I say he can make us all rich. And if any of you cannot use the money, I will see that you are all traded."