LOS ANGELES — Henry Cejudo ended Demetrious Johnson’s nearly six-year reign as the UFC flyweight champion Saturday night, earning a split-decision victory for a stunning upset at UFC 227.

Cejudo (13-2) is an Olympic gold medal-winning wrestler who only started training in mixed martial arts in 2013, but he used five takedowns and relentless offense to earn the decision.

He won 28-27 on two of the three judges’ scorecards to beat Johnson (27-3-1), who had won 13 consecutive fights since 2012 and had defended his 125-pound belt a UFC-record 11 straight times.

Johnson was the only flyweight champion in UFC history. Although successful in striking, Johnson didn’t have his usual resourceful performance in his return from a career-long layoff of 10 months.