Raul Rosas Jr. scores fifth-round KO of Raoni Barcelos at UFC Vegas 121

Raul Rosas Jr. knocked out Raoni Barcelos in the fifth round of their bantamweight bout at UFC Vegas 121 on Sept. 26, 2026. Barcelos remained down for a long time and was carried from the Octagon on a stretcher; the broadcast did not show what caused the finish.

The bout ended during Rosas Jr.'s trip takedown in the fifth round. The writer speculated that Rosas's head may have struck Barcelos's jaw, but stressed this was only a guess.