A fight for the vacant lightweight title between former featherweight champion Ilia Topuria (16-0) and former 155-pound titleholder Charles Oliveira (35-10, 1 NC) headlines Saturday’s UFC 317 fight card at T-Mobile Arena in Las Vegas. Topuria vacated the featherweight championship to move up a division in pursuit of a second UFC title. Oliveira has the opportunity to become a two-time UFC titleholder