No. 2 and No. 17, respectively, in the MMA Fighting Pound-for-Pound Rankings—vie for a belt left vacant by Islam Makhachev, who moves up to welterweight to challenge Jack Della Maddalena. Though Topuria (16-0) would probably have preferred to become lightweight champion by dethroning Makhachev,

Ilia Topuria (16-0 MMA, 8-0 UFC) takes on Charles Oliveira (35-10 MMA, 23-10 UFC) for the vacant lightweight title in Saturday's main event (pay-per-view, ESPN, ESPN+) at T-Mobile Arena in Las Vegas.