LAS VEGAS -- One of the best flyweight title reigns in UFC history came to an end Saturday night in unceremonious fashion.

Joshua Van (16-2), 24, became the second-youngest champion in UFC history, as he won the 125-pound championship with a TKO finish over Alexandre Pantoja (30-6) in the co-main event of UFC 323 inside T-Mobile Arena.

The finish came just 26 seconds in, when Pantoja appeared to suffer a serious injury to his left arm as he tumbled to the canvas after Van caught a head-kick attempt. It marked Pantoja's first loss in more than five years.

"I didn't know what happened," Van said. "He just stopped. I was trying to ground-and-pound, but the ref said something was wrong. He's one of the greatest of all time and I didn't want the fight to go that way."

Pantoja, who defend

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