Oliveira (35-10 MMA, 23-10 UFC) meets Topuria (16-0 MMA, 8-0 UFC) for the vacant lightweight title in the June 28 headliner at T-Mobile Arena in Las Vegas ( ESPN+ pay-per-view, ESPN, ESPN+).

"Do Bronx" enters the fight as a sizable underdog against fellow former UFC champion Topuria, but he's unfazed by the odds.