Yokozuna (横綱?) is the highest rank in
sumo. The name literally means "horizontal rope" and comes from the most visible symbol of their rank, the rope
(綱 tsuna?) worn around the waist. The rope is similar to the
shimenawa used to mark off sacred areas in
Shinto, and like
shimenawa
serves to purify and mark off its content. The rope, which may weigh up
to 20 kilograms, is not used during the matches themselves, but is worn
during the
yokozuna's
dohyo-iri ring entrance ceremony.
The
ōzeki (大関), or champion rank, is immediately below
yokozuna in the ranking system. Until the
yokozuna rank was introduced,
ōzeki was the highest rank attainable.
In modern sumo, the qualifications that an
ōzeki must satisfy to be promoted are that he has enough power, skill and dignity/grace (品格
hinkaku) to qualify. There are no absolute criteria, nor is there a set quota: there have been periods with no wrestlers at
yokozuna rank, and there have been periods with as many as four simultaneously.
After a tournament, the Yokozuna Deliberation Council, a body of lay
people (that is, not former sumo wrestlers) who are appointed by the
Japan Sumo Association to provide an independent quality control on Yokozuna promotion, meet and discuss the performance of the top-ranked wrestlers.