Official Rules(view all)

NCAA 9-2k, 9-2k AR 1

An ambidextrous pitcher must declare which way he will pitch to a specific batter.

PENALTY: Ball/balk, warn the pitcher and eject if the offense is repeated.

[PBUC 8.18: The pitcher must declare which arm he will pitch with and the batter may then adjust. The pitcher may then switch arms once per the at bat.]