Professional Base Ball Clubs
AS ADOPTED JOINTLY BY THE NATIONAL LEAGUE AND AMERICAN ASSOCIATION, AND GOVERNING ALL CLUBS PARTIES TO THE NATIONAL AGREEMENT.
1889.
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THE BALL GROUND.
RULE 1. The Ground must be an enclosed field, sufficient in size to enable each player to play in his position as required by these Rules.
RULE 2. The Infield must be a space of ground thirty yards square.
THE BASES.
RULE 3. The Bases must be
SEC. 1. Four in number, and designated as First Base, Second Base, Third
Base and Home Base.