Yokozuna (sumo)

Makuuchi (幕内^?) or makunouchi (幕の内^?) is the top division of the six divisions of professional sumo. Its size is fixed at 42 wrestlers (rikishi), ordered into five ranks according to their ability as defined by their performance in previous tournaments.

This is the only division that is featured on NHK's standard live coverage of sumo tournaments. The lower divisions are shown on their satellite coverage, with only the makuuchi broadcast having bilingual English commentary.

Makuuchi literally means "inside the curtain", a reference to the early period of professional sumo, when there was a curtained-off area reserved for the top ranked wrestlers to sit before appearing for their bouts.

Wrestlers are considered for promotion or demotion in rank before each grand tournament according to their performance in the one previous. Generally, a greater number of wins than losses (kachi-koshi) results in a promotion, and the reverse (make-koshi) results in demotion. There are stricter criteria for promotion to the top two ranks, which are also privileged when considered for demotion.

At the top fixed positions of the division are the, "titleholder" or san'yaku ranks of yokozuna, ōzeki, sekiwake and komusubi. There are typically 8–12 san'yaku wrestlers, with the remainder, called maegashira, ranked in numerical order from 1 downwards.

San'yaku (三役^?) literally means "the three ranks", even though it actually comprises four ranks. The discrepancy arose because the yokozuna was traditionally regarded as an ōzeki with a special license to wear a particular rope around his waist and perform a distinctive ring entry ceremony. In modern use san'yaku has a somewhat flexible definition. This is largely because the top two ranks of yokozuna and ōzeki have distinctive differences from the lower two ranks and from each other. Therefore, a reference to san'yaku can sometimes mean only the bottom three ranks, or in other cases only sekiwake and komusubi.

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