IJF Rules Modifications for 2013By usja | February 2, 2013 Here is the document that was prepared by USA Judo Referee Commission and USA Judo High Performance based on the rule changes meetings held in Mexico City 1/26 & 1/27/13 along with the link to the IJF videos: IJF Refereeing & Competition 2013 Rules Modifications IJF Refereeing & Competition 2013 Rules Video Examples IJF Refereeing & Competition2013 Rules Photo Examples