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 26 seconds in, when Pantoja was injured as he tumbled to the canvas after Van caught a head-kick attempt. It marked Pantoja's first loss in more than five years.

At his postfight news conference, UFC CEO Dana White said the injury was to Pantoja's shoulder, which had to be popped back in after the fight. White said Pantoja would undergo an MRI.

"I didn't know what happened," Van said. "He just stopped. I was trying to ground-and-pound,

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