Sumo
About sumo wrestling and sumo wrestlers.
Watching Sumo in Japan
Where and when to watch sumo in Japan.
What is Sumo?
Describes Japanese sumo and shows how to write sumo in Japanese hiragana and kanji characters. From About.com Guide to Japanese Language.
Sumo Wrestling
Describes history of sumo, sumo rules, etiquettes, and more. From About.com Guide to Martial Arts.
Nihon Sumo Kyokai
Links to the official website of Grand Sumo, by Nihon Sumo Kyokai.