Raoni Barcelos VS Raul Rosas Jr.

Raul Rosas Jr. stopped Raoni Barcelos via TKO (slam) at 1:38 of round five in the bantamweight main event of UFC Vegas 121 on September 26, 2026. Barcelos had taken rounds two through four on all three judges' scorecards, controlling the fight with nine takedowns, six-plus minutes of top control, and persistent submission threats — including a neck crank attempt in round four that forced Rosas to survive until the bell. Trailing on all cards entering the final round, Rosas came out aggressively, landed clean strikes, and then executed a trip takedown that sent Barcelos crashing to the canvas; Barcelos landed awkwardly and went limp, prompting an immediate stoppage. Barcelos required medical attention and was carried from the cage on a stretcher following the finish.

Raul Rosas Jr., the 21-year-old prodigy who turned pro at 16, headlines his first UFC main event against 39-year-old Raoni Barcelos in a true generational bantamweight clash. Barcelos has quietly assembled one of the division's hottest streaks, with wins over Talbott, Garbrandt, Simón, and Jackson, while Rosas has rattled off five straight after his loss to Rodriguez. Youth and wrestling collide with seasoned counter-striking in a headliner that doubles as a legitimacy test for both men.