Photos: Eleider Alvarez, Joe Smith - Face-Off at Las Vegas Presser

Light heavyweights Joe Smith Jr. and Eleider "Storm" Alvarez took the MGM Grand "Bubble" stage for the main event press conference Thursday afternoon in advance of Saturday's WBO world title eliminator, which will stream live on ESPN+ (coverage begins at 7:30 p.m. ET). (photos by Mikey Williams)

In other action Saturday evening, former middleweight world champion Rob Brant returns against Vitaliy Kopylenko, Julian "Hammer Hands" Rodriguez fights Anthony Laureano in a battle of unbeaten junior welterweights.

"Cassius" Clay Collard seeks "Bubble" victory number three against Maurice Williams in an eight-rounder at middleweight, and Cincinnati's Duke Ragan makes his highly anticipated professional debut in a four-round featherweight bout.