Raoni Barcelos is ‘stable, alert and responsive’ following the scary ending to his main event at UFC Vegas 121.The 39-year-old fought Raul Rosas Jr at the top of the Fight Night card on Saturday, trading heavy leather in an absolute war over five gruelling rounds.Rosas Jr vs Barcelos won the UFC’s $100,000 Fight of the Night bonus despite the scary endingGettyWhat happened to Barcelos?However, with less than two minutes to go in round five, the fight ended abruptly when Barcelos, who was on a five=fight winning streak, suddenly fell unconscious during a grappling exchange.Medics instantly rushed to Barcelos’ attention in the Octagon as replays showed the fighter being taken down and commentators tried to work out what knocked him out.The cameras then quickly cut away to Rosas Jr, who had fallen to his knees with his hands to his head, as Barcelos received medical attention in ugly scenes.“This is the truth of the fight game — it’s very dangerous. That’s the bottom line,” UFC Hall of Famer Dominick Cruz said from the commentary booth.View Tweet: https://x.com/hashtag/UFCVegas121?src=hash&ref_src=twsrc%5EtfwView Tweet: https://x.com/hashtag/UFCVegas121?src=hash&ref_src=twsrc%5EtfwBarcelos was then stretched out of the arena and sent straight to a local hospital in Vegas.According to combat sports reporter Ariel Helwani, the Brazilian bantamweight received an immediate CT scan.Thankfully, the UFC has since revealed Barcelos is conscious after a ‘comprehensive assessment.’UFC statement on Barcelos“Following his fight tonight, Raoni Barcelos was immediately transported to a Level 1 trauma center for evaluation,” a statement read.“The hospital medical team conducted a CT scan and comprehensive assessment, and he is currently being monitored.“Barcelos is stable, alert and responsive, with full movement. He will remain under medical supervision.Barcelos’ coach has also revealed the fighter is doing well from hospitalGetty“We will provide updates on his condition as they become available.”Helwani later added: “No results [from CT scan] yet but he’s able to speak and is able to move his body.”Barcelos’ coach took to social media on Sunday morning to provide an update on his man.He said Barcelos is ‘doing well’ after his CT scan and ‘everyone can stay calm.’It is still unknown what caused Barcelos to go out cold during the UFC Vegas 121 main event.What else happened at UFC Vegas 121?Elsewhere on the card, Ailin Perez scored a unanimous decision win over Norma Dumont in a heated co-main event while police officer Luis Hernandez scored a 57-second submission win on his UFC debut.Black won the women’s strawweight bracket of The Ultimate Fighter season 34GettytalkSPORT's UFC pound-for-pound rankingstalkSPORT.com has collectively voted on the best fighters to form a regularly updated UFC pound-for-pound (P4P) rankings system for the rest of 2026 and beyond.Our P4P list will be updated regularly based on performances in the Octagon — with wins, records, title wins and defences, calibre of opponents, methods of victory and much more all determining who makes it.UFC champions Islam Makhachev, Joshua Van and Sean Strickland feature – but big stars such as Alex Pereira and Tom Aspinall miss out.Furthermore, Ilimbek Akylbek and Tina Black were both crowned winners of The Ultimate Fighter season 34.Akylbek sustained an illegal knee to the head during his bantamweight fight against Mahammadali Osmanli and won by disqualification, while Black stopped Melissa Amaya in round two to win the women’s strawweight bracket.