For amateurs (C-class) the following additional actions are forbidden: elbow and forearm strikes, knees to the head, striking a grounded opponent to the head, kicking a grounded opponent, kidney strikes, throws with only a head-hold, leglocks that twist the knee, submissions that twist the spine.
There are two separate events held each time - amateur event during the day (C-class) and main event in the evening with professional fights [REF].