Rank in Judo are ranked in ascending numerical order. The ninth ("kudan") and tenth degree black belt ("jūdan") and, theoretically, those higher, have no formal requirements. Only 15 individuals have been promoted to the rank of Kōdōkan 10th dan. On January 6, 2006, three individuals were promoted to this rank simultaneously: Daigo Toshirō, Ichirō Abe, and Ōsawa Yoshimi. This is the most ever at the same time, and the first in 22 years. No one has ever been promoted to a rank higher than 10th "dan", but in theory the Judo rank system is not limited to 10 degrees of black belt. The
Judo in Canada where he was Canada's only competitor. Justin Karn, Tim Rees, and Tony Walby represented Canada in the 2012 Paralympics. Tom Thompson, head instructor at the Brantford Judo Club, has coached the national Judo team for the past four Paralympics. A video of Morgan explaining Paralympic Judo is available in the 'External links' section below. Judo is also practised by people with disabilities other than visual impairment, such as the members of the Jita Kyoei Judo Club at the Community Head Injury Resource Services in Toronto, who all have Acquired Brain Injury. Judo in such circumstances, however, is rare, non-competitive, and