17 CAR § 225-614 – Bouts, heats, and rounds

(a) Non-championship and non-title bout or bouts shall be scheduled for three (3) rounds.
(b) Championship or title bouts shall be scheduled for five (5) rounds.
(c) If agreed in a writing signed by the contestant and contestant’s opponent prior to the weigh-ins and the bout is scored a draw at the end of the scheduled rounds, a professional bout may be extended by successive individual “overtime” rounds until a winner is declared in accordance with this part.