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Teixeira: Barcelos Had Brain Swelling at UFC Vegas 121

Glover Teixeira reveals Raoni Barcelos suffered brain swelling after his sudden loss to Raul Rosas Jr. at UFC Vegas 121.

By Knockout Odds Staff··3 min read
Teixeira: Barcelos Had Brain Swelling at UFC Vegas 121

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Raoni Barcelos experienced brain swelling after losing consciousness in his UFC Vegas 121 fight against Raul Rosas Jr., according to Glover Teixeira, who worked Barcelos' corner that night.

Barcelos was well ahead on the scorecards through four rounds of the bantamweight main event on Sept. 26 at Meta Apex in Las Vegas when he suddenly went limp during a wrestling exchange and lost consciousness, forcing the referee to stop the fight and hand Rosas Jr. a TKO victory. Barcelos was taken to a Level 1 trauma center afterward.

What caused Raoni Barcelos to lose consciousness against Raul Rosas Jr.?

Teixeira said doctors ran extensive tests on Barcelos because the way he went out didn't look like a normal knockout. "It was different because it wasn't a knockout," Teixeira said on the Overdogs Brasil podcast. "This was something that happened out of nowhere, and we started thinking about all kinds of things. Could it have been his heart? Could it have been something neurological? They went in and ran the tests."

The results showed swelling in Barcelos' brain, which Teixeira said may explain why he blacked out even though he wasn't hit with a finishing blow. "There was some swelling in his brain, so it was a traumatic brain injury and maybe that swelling caused him to black out," Teixeira said. He described it as the body shutting itself down rather than Barcelos giving up, adding that "his mind was stronger than his body."

What This Means Going Forward

A traumatic brain injury finding typically triggers an extended medical suspension and a battery of follow-up imaging before any athletic commission clears a fighter to return to the cage. For Barcelos, who was winning the fight on the cards before the sudden stoppage, the next steps are medical, not competitive, and his timeline back won't be set by matchmakers but by neurologists signing off on his recovery.

For bettors, the episode is a reminder of how fast a winning scorecard can flip in MMA, and it should factor into how the market prices Barcelos whenever he's next cleared to compete. Books and oddsmakers tend to treat fighters coming off any kind of brain injury with caution, often building in longer layoffs and softer opening lines until there's tape showing the fighter is fully healthy again.

Frequently Asked Questions

Why did Raoni Barcelos lose consciousness against Raul Rosas Jr. at UFC Vegas 121?

Glover Teixeira said Raoni Barcelos suffered brain swelling, a traumatic brain injury, which may have caused him to black out during a wrestling exchange rather than from a conventional knockout blow.

Who won the Raoni Barcelos vs. Raul Rosas Jr. fight?

Raul Rosas Jr. was awarded a technical knockout victory after Raoni Barcelos lost consciousness and the referee stopped the bout at UFC Vegas 121 on Sept. 26.

Was Raoni Barcelos winning the fight before he was stopped?

Yes, Raoni Barcelos was ahead on the judges' scorecards heading into the final round against Raul Rosas Jr. before suddenly losing consciousness.