RAJU is the highest level of Estonian mixed martial arts league. There are 2 competitions in a year. Their most recent competition, Raju X, was held in Tartu A. Le Coq Sports Hall on 13 October 2012. 
Fighters can participate at MMA Raju in one of the three following divisions: amateur (C-class), semi-professional (B-class) and professional (A-class). 
In all three classes, the following actions are considered fouls: headbutts, biting, grabbing hair, inserting fingers into orifices or wounds, attacks to the groin, small joint manipulation, attacks to the back of the head and spine, attacking and grabbing the throat, clawing and pinching, grabbing the collar-bone, direct attacks to joints, 12-to-6 elbow strikes, kicks and knees to the head of a grounded opponent, intentionally throwing the opponent onto the head or neck, throwing the opponent out of the cage, spitting at the opponent, grabbing the fence, swearing.
For semi-professionals (B-class) the following additional actions are forbidden: elbow and forearm strikes to the head, kicking a grounded opponent in the head.
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. 
Before MMA Raju 7, the organizers established a charity program called "Donate blood with Raju fighters". In this program, mixed martial artists themselves and fans of the league donate blood together during one day, which occurs roughly one month before the event. For Raju 7, roughly 40 people donated blood. Before Raju 8, 85 people donated their blood, including Estonian rapper G-Enka.  Before Raju X, over 200 people donated blood.