UFC Vegas 121 odds: Rosas Jr. favored, Jauregui opens at -1000

The UFC has released betting odds for Vegas 121, with Raul Rosas Jr. favored in the main event against Raoni Barcelos at -175. The 11-fight card features several significant matchups across varying levels of competitiveness. Yazmin Jauregui emerges as the card's heaviest favorite at -1000 against Vanessa Demopoulos, reflecting dominant odds in her favor. By contrast, the closest matchup of the night pits Ailin Perez against Norma Dumont, with Perez favored at -138 and Dumont at +117—a tight betting proposition. Other notable bouts include Mehemmedali Osmanli (-290) facing Ilimbek Akylbek Uulu (+240), and John Castaneda (-350) taking on Heili Alateng (+280). The main event features totals for both fight length and decision rounds, with Over 4.5 (-125) and Under 4.5 (-105) reflecting expectations for an active bout. Additional heavyweight action includes Rodolfo Bellato (-180) versus Christian Edwards (+155), while lighter divisions showcase Montel Jackson (-205) against Ricky Simon (+173) and Brady Hiestand (+280) against Rinya Nakamura (-350). Josiah Harrell (-142) faces Elves Brener (+122) in another featured preliminary-level matchup, and Melissa Amaya (+180) meets Valesca Machado (-215). A recent addition to the card sends Rodolfo Vieira (-155) against Robert Bryczek (+133).