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Raoni Barcelos loses by knockout at UFC Vegas 121

The Brazilian was defeated by Raul Rosas Jr. in the fifth round of the main event

Daniele Morais
September 27, 2026 · 2 min read
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Raoni Barcelos loses by knockout at UFC Vegas 121
Photo: "Islam Makhachev 2022 UFC belt" by Новости ННТ is licensed under CC BY 3.0. To view a copy of this license, visit https://creativecommons.org/licenses/by/3.0/.

Raoni Barcelos stepped into the Las Vegas octagonal on Saturday night to face Raul Rosas Jr. in a fight that could bring them closer to a bantamweight title shot. The bout, part of the UFC Vegas 121 card, ended before the end of the fifth round, when Rosas Jr. landed a knockout that concluded the match.

What happened in the main event

The duel between Rosas Jr. and Barcelos unfolded in a balanced manner until the fifth round, when the Brazilian was still looking to get on the scoreboard. At 1 minute and 38 seconds of the final round, Rosas Jr. landed a strike that left Barcelos unconscious, securing the victory by knockout.

Raoni Barcelos' performance

Barcelos showed resilience throughout the first four rounds, but failed to impose his rhythm on Rosas Jr. The lack of a decisive blow and the opponent's constant pressure culminated in the abrupt end of the fight. The defeat snaps the five-fight winning streak the Brazilian had accumulated.

Impact of Raul Rosas Jr.'s victory

With the knockout, Rosas Jr. moved up in the bantamweight rankings and got closer to an opportunity to contend for the belt. The result also reinforces the fighter's position as one of the top contenders to challenge the division champion.

Other preliminary card results

Among the other matchups, Elves Brener defeated Josiah Harrell by knockout at 4 minutes and 14 seconds of the first round. Other highlights included Luis Hernandez defeating Sedriques Dumas by submission in 57 seconds and Ailin Perez overcoming Norma Dumont by unanimous decision.

Immediate repercussion

Barcelos' knockout was quickly recorded in live broadcasts and event results updates. The fight, broadcast live at the Meta Apex, received widespread coverage by sports media outlets that follow the UFC.

With information from UFC.com.br, MMA Fighting.

Source: UFC.com.br, MMA Fighting

#UFC#Raoni Barcelos#Raul Rosas Jr.#UFC Vegas 121#MMA
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