Rosas reveals he feared he had killed Barcelos after chilling UFC Vegas 121 collapse

Raul Rosas Jr. says he feared he had killed Raoni Barcelos after the veteran bantamweight collapsed without warning during the fifth round of their UFC Vegas 121 main event, a fight Rosas ultimately won by knockout to extend his winning streak to six.

Barcelos fell abruptly during an exchange in the final round without appearing to absorb a significant blow, prompting a lengthy medical intervention at the ringside. The 39-year-old was taken to hospital but was able to return home within days.

“I thought I killed him, to be honest, and I was scared,” Rosas said in an interview with Jorge Masvidal. “I didn’t know how I was going to feel after that because at the end of the day, yeah, we want to f*ck each other up and shit, but I want both of us to go back to our families. After everything I was a little bit worried, but now I’m glad that he’s back home, he’s with his family, and everything’s good.”

Rosas, who was 22 at the time of the fight, admitted he had no clear answer on what caused the collapse. “I didn’t really look too deep, but I just know that it was probably some brain swelling or something deep,” he said. “I just hope that he’s good now, his health is good, and everything’s good with him and his family.”

The incident prompted Rosas to reflect on the physical toll MMA extracts from its competitors. “I was just scared because I know they also had to, like, bring him back to life,” he said. “It’s hard to see that in the sport, in MMA, because we have small gloves. Usually, one shot puts you out. In boxing, you’ve seen some people die because it’s big gloves, so you can take more punishment. We are really risking our lives every time we step in there.”

The finish was also a pivotal one in competitive terms. Rosas was trailing on the scorecards heading into the fifth round, making the stoppage not only a career-best result but a necessary one to keep his title ambitions alive. He now sits in the top ten of the UFC bantamweight rankings and has stated his goal of becoming the youngest champion in UFC history.

Despite the difficult circumstances surrounding the ending, Rosas was generous in his assessment of his opponent. “Raoni doesn’t get the respect that he deserves,” he said. “His grappling’s high level, his wrestling — he’s got a whole lot of experience.” The win was Rosas’ first finish inside the distance since 2024, a notable milestone in a bantamweight division where stoppages have become increasingly rare.