All contestants are required to wear a mouthpiece during competition. The round cannot begin without the mouthpiece. If the mouthpiece is dislodged during competition, the referee will call time and have the mouthpiece replaced at the first opportune moment, without interfering with the immediate action. The referee may deduct points if it is judged the mouthpiece is being purposely spit out.
Following any medical time-out, or when a ring is being used and one or both opponents are under the ropes on the apron of the ring or in danger of falling from the apron of the ring, time will be called by the referee and both fighters will be positioned in the middle of the ring and assume the same position as the one prior to the time out.