UFC Vegas 121 predictions

UFC Vegas 121 takes place Saturday, September 26, at the Meta Apex in Las Vegas, featuring 22-year-old bantamweight prospect Raul Rosas Jr. in his first main event headliner against 39-year-old veteran Raoni Barcelos. Both fighters carry five-fight winning streaks, but from different trajectories: Rosas aims to become the youngest UFC champion in history, while Barcelos is enjoying an unexpected late-career resurgence that could lead to a title opportunity.

The card also includes a heated bantamweight co-main event between Norma Dumont and Ailin Perez—a genuine grudge match with title implications—plus two TUF 34 tournament finals. The event streams on Paramount+, with the five-fight main card beginning at 8 p.m. ET and early preliminary action at 5 p.m. ET.

In the main event, Rosas has demonstrated improved technical striking and resolved early cardio issues, but Barcelos' well-rounded skill set and experience in extended fights could prove decisive. Barcelos is favored to dictate standing exchanges and pull away in the championship rounds as Rosas levels up through defeat. In the co-main event, the animosity between Dumont and Perez will likely produce an explosive but sometimes sloppy affair; Dumont's superior striking and takedown defense are expected to wear down Perez, earning a decision victory. In a short-notice bout, Luis Hernandez—fresh off a Dana White Contender Series signing—faces Sedriques Dumas; Hernandez's aggressive pressure and volume should overcome Dumas's size advantage, with a late second-round finish expected. The TUF 34 finals feature 22-year-old Mahammadali Osmanli, a heavy hitter with submission finishing instincts, against 23-year-old grappler Ilimbek Akylbek in the bantamweight final.