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. Emmanuel recovered, pulled Hackney towards his chest and unloaded strikes on his neck, and then literally pushed him out the cage through the door in spectacular fashion. However, when the match was restarted, Hackney knocked Yarbrough again and followed with hand strikes for the TKO. Keith since took the nickname "The Giant Killer" for this victory. Emmanuel's second MMA fight would be in Japan for the promotion
Shooto. He faced Tatsuo Nakano, a former
shoot-style professional wrestler whom Yarbrough outsized greatly. This time, the sumo wrestler got advantage of fighting in a ring and cornered Nakano against the turnbuckle, taking dominant position over him. When the contenders were relocated on the center of the ring, Yarbrough just shifted his abdomen over Nakano's head. Unable to get out from under his opponent and being smothered by the weight, the Japanese fighter tapped out, giving Yarbrough his first and only victory. Only months later, Emmanuel fought his third and last bout, for the Japanese promotion
Pride Fighting Championships, facing his smallest opponent in the form of Japanese grappler
Daiju Takase. Takase avoided engaging Yarbrough and earned a yellow card for inactivity in the second round. Eventually, Takase attempted a takedown, which Yarbrough was able to deny and gain dominant position; however, Takase managed to escape and landed numerous punches to Yarbrough's head and body, forcing him to submit. ==Professional wrestling career==