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 Judo Championships. Canada's greatest success in international competition, however, has been at the Pan American Games, with a total of 76 medals ranging from gold to bronze awarded since 1967 (see '' for lists of the results). Judo is also practised by visually impaired athletes, and became a Paralympic sport in 1988 for men and 2004 for women. While often referred to as 'blind judo', it includes athletes with three different levels of visual impairment, all of whom may compete against one another so long as they are in the same weight category. The only differences between Olympic and Paralympic