Looks like there is, or use to be some in NJ
SUMO WRESTLING
Cranford Judo & Karate Club
107 South Avenue W.
Cranford, NJ 07016
(908) 276-3544
http://www.cranfordjkc.com/Sumo.htm
South Mountain Martial Arts
Mark Lawrence (Sumo), Dayn DeRose (Judo, Jujitsu, Kenpo, & Sambo)
91 Main Street
Madison New Jersey 07940-1849
(973) 822-1977
DarynDD@Comcast.net
http://www.southmountainmartialarts.com/page0004.html
“Koryu Judo & Sumo. Amateur sumo is a well organized, immensely enjoyable form of grappling which has been gaining popularity around the world. The rules for sumo are simple. Two contestants, wearing only grippable body wraps (“mawashi”), use various strategies and techniques – some of which are surprisingly subtle – to upset each other’s balance. A victory occurs when one of the two opponents touches the playing floor with any part of the body other than the soles of his or her feet, or if one of the contestants is forced outside a playing ring which is 15 ft wide (i.e., the “dohyo”). Punching, gouging, and kicking are prohibited. Pushing, pulling, body slapping, tripping, and throwing techniques are allowed. The “mawashi” (sumo belt) may be grabbed anywhere around the waist, but not in the groin area. Hair-pulling is also banned. Most victories are achieved with about a dozen of the 82 recognized kimarite (winning techniques).”