Profile
| No of Teams | 30 |
|---|---|
| Recent Champion | To be decided between Los Angeles Dodgers or New York Yankees (2024) |
| Most Titles | New York Yankees (27 Times) |
| External Link | http://MLB.com |
Overview
MLB comprises 30 teams, divided equally between the National League (NL) and the American League (AL), with 29 in the United States and 1 in Canada. Formed in 1876 and 1901 respectively, the NL and AL cemented their cooperation with the National Agreement in 1903. They remained legally separate entities until 2000, when they merged into a single organization led by the Commissioner of Baseball. MLB is headquartered in Midtown Manhattan. It is considered one of the major professional sports leagues in the United States and Canada.
Baseball's first all-professional team, the Cincinnati Red Stockings, was founded in 1869. The first few decades of professional baseball saw rivalries between leagues, and players often jumped from one team or league to another. The period before 1920 was the dead-ball era, when home runs were rarely hit. Professional baseball survived the Black Sox Scandal, a conspiracy to fix the 1919 World Series, then rose in popularity in the following decade. It survived the Great Depression and World War II. Shortly after the war, Jackie Robinson broke baseball's color barrier.
Each team plays 162 games per season, and six teams in each league advance to a four-round postseason tournament that culminates in the World Series, a best-of-seven championship series between the two league champions first played in 1903. The New York Yankees have the most championships: 27. The reigning champions are the Texas Rangers, who defeated the Arizona Diamondbacks, 4–1, in the 2023 World Series.
MLB is the second-wealthiest professional sport league by revenue after the National Football League (NFL). Baseball games are broadcast on television, radio, and the internet throughout North America and in several other countries. MLB has the highest total season attendance of any sports league in the world; in 2018, it drew more than 69.6 million spectators.
MLB also oversees Minor League Baseball, which comprises lower-tier teams affiliated with the major league clubs. MLB and the World Baseball Softball Confederation jointly manage the international World Baseball Classic tournament.
League Organization
In 1920, the weak National Commission, which had been created to manage relationships between the two leagues, was replaced with the much more powerful Commissioner of Baseball, who had the power to make decisions for all of professional baseball unilaterally. From 1901 to 1960, the American and National Leagues fielded eight teams apiece.
In the 1960s, MLB expansion added eight teams, including the first non-U.S. team (the Montreal Expos). Two teams (the Seattle Mariners and the Toronto Blue Jays) were also added in the 1970s. From 1969 through 1993, each league consisted of an East and West Division. In 1993, the National League expanded with two teams, the Florida Marlins and the Colorado Rockies, to even up the number of teams in both leagues. A third division, the Central Division, was formed in each league in 1994. Until 1996, the two leagues met on the field only during the World Series and the All-Star Game. Regular-season interleague play was introduced in 1997.
In March 1995, two new franchises, the Arizona Diamondbacks and Tampa Bay Devil Rays (now known as the Tampa Bay Rays), were awarded by MLB, which began play in 1998. This addition brought the total number of franchises to 30. In early 1997, MLB decided to assign one new team to each league: Tampa Bay joined the AL and Arizona joined the NL. The original plan was to have an odd number of teams in each league (15 per league, with five in each division), but in order for every team to be able to play daily, this would have required interleague play to be scheduled throughout the entire season. However, it was unclear at the time if the interleague play would continue after the 1998 season, as it had to be approved by the players' union. For this and other reasons, it was decided that both leagues should continue to have an even number of teams, and therefore, one existing club would have to switch leagues. The Milwaukee Brewers agreed in November 1997 to move from the AL to the NL, thereby making the NL a 16-team league. At the same time, the Detroit Tigers agreed to move from the AL East to the AL Central (to replace Milwaukee), with the expansion Tampa Bay Devil Rays joining the AL East. Later, when the Houston Astros changed ownership prior to the 2013 season, the team moved from the NL Central to the AL West, resulting in both leagues having three divisions of five teams each and allowing all teams to have a more balanced schedule. Interleague play is now held throughout the season.
In 2000, the AL and NL were dissolved as legal entities, and MLB became a single, overall league de jure, similar to the National Football League (NFL), National Basketball Association (NBA) and National Hockey League (NHL)—albeit with two components called "leagues" instead of "conferences". The same rules and regulations are used in both leagues, with one former exception: the AL operated under the designated hitter (DH) rule, while the NL did not. This difference in rules between leagues was unique to MLB, as the other major professional sports leagues in the U.S. and Canada have one set of rules for all teams.
In 2020, the National League (NL) used the designated hitter (DH) rule for the first time. As part of the settlement of the 2021–22 Major League Baseball lockout, this change was made permanent thus making the rules in the two leagues identical.
Teams
American League
East
Central
West
National League
East
Central
West
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