UFC Vegas 121: Security intervenes following Ailin Perez’s controversial win over Norma Dumont

Ailin Perez claimed a controversial unanimous decision over rival Norma Dumont in the co-main event of UFC Vegas 121, but the aftermath nearly sparked a second fight inside the octagon. Security personnel had to intervene multiple times to separate the two featherweights as tensions boiled over following the final horn.

Perez controlled much of the action across three competitive rounds. She won a striking-heavy first round before securing a late takedown to close it out decisively. Dumont showed more aggression in the second, landing an early takedown and connecting with significant shots late in the round, though both fighters grew more measured as the stanza progressed. In the third, Perez pushed Dumont against the fence and landed a brutal body knee, finishing strong with a left hand at the horn.

All three judges scored the bout 29–28 in Perez's favour, a result that left Dumont visibly shocked and fuming. She continued taunting her opponent even after the decision was read, prompting security to step between them. Perez responded with her post-fight celebration and later addressed the animosity in her interview, alleging disrespect from Dumont. The intensity of their rivalry and the heated nature of the aftermath underscored the personal stakes of the matchup, though Perez's technical edge and control ultimately won out on the scorecards despite the close, back-and-forth nature of the contest.