 In 2007, he intended to drop from 750 to 550 lbs in order to improve his health, still hoping to participate in the next Sumo World Championships and the US Olympic judo tryouts.In 1994, Yarbrough applied to mixed martial arts promotion Ultimate Fighting Championship and took part in the event UFC 3 representing sumo.He was pitted against the much smaller Keith Hackney, a kempo representative, who opened the match by immediately knocking Yarborough down with a palm strike.