(CNN)-- Asashoryu stands at the pinnacle of sumo wrestling like a colossus ... his success in the dohyo has not pleased everyone. Some have complained that his wins are too routine, and purists ...

SAN JOSE, CA - JUNE 1993: The sumo dohyo awaits the start of the 1993 San Jose Basho sumo wrestling tournament held June 4-5, 1993 at the San Jose Event Center in San Jose, California.

As he did during his successful sumo career, Kotooshu never quit when things got difficult and kept strongly moving forward in life outside the dohyo ... in the Mongolian wrestling world ...

We investigate how rikishi perceive the sumo ring, a circle 4.55 meters across. Along the way we highlight the work that goes into constructing it and how rikishi grip the clay with their toes.

Sumo wrestling is a sport fought between two wrestlers, or rikishi, in a circular ring called a dohyo. The objective is simple: push or throw your opponent out of the ring or force them to touch ...

Travel writer David Placher took in a sumo wrestling match and visited the Daikoku car experience while visiting Tokyo.

Former ozeki great Kaio, now stablemaster Asakayama, continued his wrestling career until he was nearly 40 because he could still dominate junior wrestlers in the dohyo. Seeing that ...