A girl was knocked out cold with a sickening thud to the floor as four teens smashed each other about in front of a baying crowd. As part of a real-life Fight Club the young teens split into two teams and squared up to each other as they prepared to fight. The four girls - aged no more than 16 - then launched towards one another - punching and kicking out at each other. In one sickening moment a girl is knocked unconscious, before her attacker deliberately kicks her in the face. The shocking incident in Russia has been shown on Russian national TV, causing outrage across the nation.