2959620 Sumo Wrestlers, c.1877 (photo) by Kimbei, Kusakabe (1841-1934) (attr. to); Private Collection; (add.info.: Sumo (?豢) is a competitive full-contact wrestling sport where a rikishi (wrestler) attempts to force another wrestler out of a circular ring (dohy?) or to touch the ground with anything other than the soles of the feet. The sport originated in Japan, the only country where it is practiced professionally. ); Prismatic Pictures ; Japanese, out of copyright.