Major League Baseball is the highest level of game in region professional  baseball in North America. More specifically, MLB refers to the entity that operates North America's two top leagues, one is The National League and other one is  the American League, by means of A joint organizational structure which has existed between them since 1920

Major League Baseball is governed by the MLC  (Major League Constitution), an agreement that has undergone several incarnations since 1920, with the most recent revisions being made in 2001. MLB Commissioner hires, and maintains the sports umpiring crews, and negotiates marketing, labor, and television contracts. The 'closed shop' aspect of MLB effectively prevents the yearly promotion and demotion of teams into the Major League by virtue of their performance (as, for example, in the English football league system, where the bottom three teams in the highest league are demoted to a lower league, and the top three from the second highest league move into the top league).

MLB also maintains a unique, controlling relationship over the sport, including most aspects of minor league baseball. This is due in large part to a 1922 U.S. Supreme Court ruling which declared baseball is not considered interstate commerce (and therefore not subject to federal antitrust law), despite baseball's own references to itself as an "industry" rather than a "sport."

Current Major Leagues

The Major League season generally runs from early April through the end of September. Players and teams prepare for the season in spring training, primarily in Florida and Arizona, during February and March.

Game Schedule

In all there are 30 teams in the two leagues: 16 in the elder National League ("NL") and 14 in the American League ("AL"). Each has its teams split into three divisions grouped generally by geography and styled "East," "Central," and "West," respectively.

Each team's regular season consists of 162 games, a duration established in 1961. From 1898 to 1960, a 154-game schedule was played. Games are played predominantly against teams within each league through an unbalanced schedule which heavily favors divisional play. In 1997 Major League Baseball introduced interleague play, which was criticized by the sport's purists but has since maintained popularity with casual fans.

Hi  I want  to Distract you and Ii think I done the damage

 WCW