According to imdb
"Was the Massachusetts Full Contact Tae Kwon Do champion four consecutive times.
At the age of 19, he won the US Open Tae Kwon Do Championship and, as the lightweight champ, went on beat both the middle and heavy weight title holders to take home the Grand Championship."
http://www.imdb.com/name/nm0736579/bio
Also, I heard he doesn't get paid a dime for the work he does for the UFC. His NBC contract prevents thats. He just does it cause he loves the sport and gets to sit ring side.