Barcelos confirmed stable after alarming UFC knockout by Rosas Jr.

Key points

• Barcelos was transported to a hospital for a CT scan after going unconscious during the fifth round of his main event bout against Raul Rosas Jr. at UFC Vegas 121 in Las Vegas on September 26, 2026.
• Trainer Davi Ramos released a video stating Barcelos is fine and can 'relax,' while Ariel Helwani reported that Barcelos was able to speak and move his body after the scan.
• Rosas Jr. won via TKO at 1:38 of the fifth round, ending Barcelos' five-fight win streak and extending his own to six consecutive victories.
• The finish occurred after a routine takedown, with Barcelos going limp, prompting the referee to stop the fight.
• Rosas Jr., who turns 22 in October, is now targeting the record for youngest UFC champion, previously held by Jon Jones.

Background

Barcelos, 39, entered the fight on a five-fight winning streak against younger opponents, while Rosas Jr., 21, was the youngest fighter to headline a UFC card. The event also featured the Ultimate Fighter 34 finals, where Tina Black won the strawweight tournament and Ilimbek Akylbek defeated Mahammadali Osmanli by disqualification. Ailin Perez extended her winning streak to seven with a unanimous decision over Norma Dumont, and new signing Luis Hernandez secured a quick submission win in his debut.

How outlets are covering it

Bloody Elbow and UFC.com emphasized the alarming nature of the knockout, with Barcelos going limp and being stretchered out of the Octagon. CBS Sports had predicted Barcelos would win via split decision, citing his 87% takedown defense and experience against younger opponents, but Rosas Jr. capitalized on a takedown in the fifth round. ESPN was unavailable due to a 403 error, so no perspective could be extracted. All sources agreed on the final result and the health update, but differed on the pre-fight expectations, with CBS Sports favoring Barcelos and others noting Rosas Jr.'s momentum.

Why it matters

The incident highlights the risks of high-stakes UFC bouts, particularly when younger, aggressive fighters face experienced veterans. Rosas Jr.'s victory positions him as a top contender in the bantamweight division, while Barcelos' health scare raises concerns about fighter safety. The outcome may influence future matchmaking and the trajectory of both fighters' careers.

What to watch

CT scan results for Barcelos are pending, and his return to competition will depend on medical clearance. Rosas Jr. is expected to continue climbing the bantamweight divisional ladder, potentially targeting a title shot. The UFC may schedule a rematch between the two if both fighters are healthy and willing.