Baseball rules
From Wikipedia, the free encyclopedia
Throughout the history of baseball, the rules have frequently changed as the game continues to evolve. A few common rules most professional leagues have in common is that four balls is a base on balls, three strikes is a strikeout, and three outs end a half-inning.
This article is about the rules of baseball. For the tort law rule governing liability for injuries to spectators from foul balls, see Baseball Rule.
Baseball evolved out of bat-and-ball games in the mid-19th century, and its modern rules are largely based on those first published in 1848.[1] Most rule sets are generally based on the Official Baseball Rules (OBR) published by Major League Baseball (MLB), though various minor variations exist from league to league; the World Baseball Softball Confederation maintains its own official rule set for international competition.[2]