LOS ANGELES (AP) — Henry Cejudo pulled off one of the most impressive upsets in mixed martial arts history at UFC 227.

Cejudo ended Demetrious Johnson’s nearly six-year reign as the UFC flyweight champion Saturday night at Staples Center, earning a split-decision victory over the most dominant active champion in the sport.

Cejudo (13-2) is an Olympic gold medal-winning wrestler who only started training in mixed martial arts five years ago.