Rule 2 – Section 4 – BALL, BASE ON BALLS, INTENTIONAL BASE ON BALLS
2-4-1 The ball is one of the playing implements (See 1-3-1). The term is also used to designate a pitch which is not touched by the bat and is not a strike as in 7-2-1 and 7-2-2.
2-4-2 A base on balls is an award of first base (often referred to as a “walk”) if a batter receives four such balls. The batter must go immediately to first base before time-out is called.
2-4-3 An intentional base on balls may be given by the defensive team by having its catcher or coach request the umpire to award the batter first base. This may be done before pitching to the batter or on any ball and strike count. The ball shall be declared dead before making the award.