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 focused on recreation and rehabilitation. Canadian judoka have been decorated by the Emperor of Japan with the Order of the Sacred Treasure, Gold Rays with Rosette and the Order of the Rising Sun, Gold Rays with Rosette. Four judoka have been awarded Membership in the Order of Canada, the country's second highest civilian honour of merit, for outstanding contributions to their communities through Judo: James Driscoll of Belleville, Ontario (1978), Yuzuru Kojima of Richmond, British Columbia (1983), Yoshio Senda of Lethbridge, Alberta (2007), and Hiroshi Nakamura of LaSalle, Quebec (2012). Four judoka are members of the Canadian Olympic Hall of