The attacking wrestler then kneels on one knee on the opposing wrestler's arms, pinning the opponent's shoulders to the mat. The attacking wrestler then takes the opponent's legs, crosses them, and positions them under one of the opponent's armpits, bending the opponent into a pinning situation. Super Delfin invented by Taka Michinoku. Wrestling has evolved over time. Some modern day attacks include: the atomic bomb elbow, the brainbuster, the jackhammer, the pumphandle, and the superkick. Traditional rules of fair fight are not applied in professional wrestling. A wrestler will use any means necessary to win at any cost including cheating. In recent years, some wrestlers have started using illegal weapons in the ring which has caused a public outcry. In 2005, World Wrestling Entertainment (WWE) banned all forms of restraint used by wrestlers to injure their opponents such as the straitjacket face lock, the headscissors, and the bearhug. In 2007, WWE banned diving headfirst off the top rope to inflict a concussion on your opponent. Professional wrestling is a staged performance with pre-planned moves designed to tell a story or achieve a predetermined result. The referee has no role in determining the outcome of the match; instead, he or she monitors the action and signals when there is a legal blow intended for the head or neck.