Cal. Code Regs. tit. 4 § 516
If the referee determines that the injured fighter was responsible for his own injury, the referee will not penalize his opponent in any manner. In this case, if the referee or ring physician determines that the injured fighter is unable to continue, he will lose by "technical knockout".
If the referee determines that no fault was attributable to either fighter, the referee shall allow the injured fighter 5 minutes to recover. If, at the end of the recovery period, the referee or the ringside physician determines that the injured fighter cannot continue, the bout will be decided on the score cards if a majority of the rounds have been completed (including the round in which the injury occurred) or, if a majority of the rounds have not been completed, the bout will be called a technical draw.
Cal. Code Regs. Tit. 4, § 516
Note: Authority cited: Sections 18611 and 18763, Business and Professions Code. Reference: Sections 18640 and 18765, Business and Professions Code.