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Major League Baseball - Wikipedia, the free encyclopedia |
 | | More specifically, Major League Baseball ("MLB") refers to the entity that operates North America's two top leagues, the National League and the American League, by means of a joint organizational structure which has existed between them since 1920. |
 | | Major League Baseball is governed by the Major League Baseball Constitution, an agreement that has undergone several incarnations since 1876, then called the NL Constitution, with the most recent revisions being made in 2005. |
 | | Major League Baseball, under the direction of its Commissioner, Bud Selig, hires and maintains the sport's umpiring crews, and negotiates marketing, labor, and television contracts. |
| en.wikipedia.org /wiki/Major_League_Baseball (1921 words) |
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