Ilia Topuria

Ilia Topuria just gave Nelk Boys haters an absolute treat -- the current UFC lightweight champion didn't pull any punches in sparring sessions with the YouTubers ... resulting in some hilarious content!! The group posted their workout with the champ to their YouTube channel Wednesday ... and as…

Ilia Topuria is opening up on his brutal (and shocking) knockout of Charles Oliveira ... and talking about who could be next -- and he's putting two big UFC stars on notice! The 28-year-old newly crowned lightweight champ joined Babcock on the TMZ Sports TV show (airs nightly on FS1) ... just days…