Official rules of Major League Baseball

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The Official Rules of Major League Baseball is a set of rules set forth by the MLB governing the playing of baseball games by professional teams of Major League Baseball and the leagues that are members of the National Association of Professional Baseball Leagues. It is also used by many amateur leagues, although in these cases, the monetary fines and other such stipulation are usually considered impractical and disregarded.


Starting with the Knickerbocker Rules in 1845, and the National League Rules in 1877, the rules of baseball have evolved over time. The 2009 edition of the rulebook runs 224 pages.

Current rules committee[edit]

External links[edit]