
Matt "Sumo" Shriner
A Brazilian Jiu Jitsu black belt and 2x IBJJF World Masters Champion, promoted under coral belt Marco Nascimento. His path runs decades deep - full-contact karate in Japan, Muay Thai at Fairtex headquarters in Thailand, and a lifetime on the mats. Those decades of competing and training into his masters years led to the development of Longevity Jiu Jitsu - an approach built for older athletes to train hard, stay healthy, and keep rolling for life.












