Mongolian yokozuna Asashoryu will have to be on his best behavior from now on after causing a fracas at the Nagoya Grand Sumo Tournament and becoming the first grand champion in the ancient sport to lose through disqualification.

The Yokozuna Deliberation Council said Monday it has made an official request to Japan Sumo Association chairman Kitanoumi to instruct the yokozuna to obey the rules of sumo etiquette.

Officials said that should Asashoryu's disruptive behavior continue, the 22-year-old could face disciplinary action.

Asashoryu was embroiled in a bathroom bust-up with compatriot and rank-and-filer Kyokushuzan after he committed a taboo by pulling the latter down by the topknot and lost through disqualification in a bout at the recently concluded Nagoya meet.