Allen's Fifth-Round Choke Stuns Duncan at UFC Vegas 122

Brendan Allen submits Christian Leroy Duncan with a fifth-round rear-naked choke in the UFC Vegas 122 main event, defending his No. 5 middleweight ranking and calling out ex-champ Dricus du Plessis. Plus: Andre Fili's knockout-of-the-year head kick on Kai Kamaka III, four $100,000 Performance of the Night bonuses, redemption nights for Francisco Prado and Brendson Ribeiro, Dedduanglek Torfunfarm's career-best KO at ONE Friday Fights 174, and teenager Rustam Yunusov staying perfect at 18-0.