The UFC lightweight championship will be on the line at T-Mobile Arena in Las Vegas on December 11 when Louisiana's Dustin "The Diamond" Poirier looks to follow up a pair of wins over Conor McGregor by taking the belt from Brazilian finisher Charles Oliveira in the main event of UFC 269. Plus, the G.O.A.T. of women's combat sports returns, as Amanda Nunes defends her bantamweight crown against hungry challenger Julianna Pena, and a score gets settled at 170 pounds when Jorge Masvidal squares off with Leon Edwards.