(a) Any player on a regular season team may pitch.
Exception: Any player who has played the position of catcher in four (4) or more innings in a game is not eligible to pitch on that calendar day.
A player who played the position of catcher for three (3) innings or less, moves to the pitcher position, and delivers 21 pitches or more (15- and 16-year-olds: 31 pitches or more) in the same day, may not return to the catcher position on that calendar day. EXCEPTION: If the pitcher reaches the 20-pitch limit (15- and 16-year-olds: 30-pitch limit) while facing a batter, the pitcher may continue to pitch, and maintain their eligibility to return to the catcher position, until any one of the following conditions occur: (1) that batter reaches base; (2) that batter is retired; (3) the third out is made to complete the half-inning or the game; or (4) the pitcher is removed from the mound prior to the batter completing his/her at-bat.