LAS VEGAS - Two days before their important fights live on SHOWTIME® (10 p.m. ET/7 p.m. PT), this Saturday, March 28, hard-hitting WBC Featherweight World Champion Jhonny Gonzalez, 2008 U.S. Olympian and former world title challenger Gary Russell Jr., undefeated super welterweight Jermell Charlo and once-beaten super welterweight Vanes Martirosyan participated in the final press conference at The Pearl Theater at the Palms Casino Resort in Las Vegas.

In the second half of a SHOWTIME CHAMPIONSHIP BOXING® doubleheader, the hard-hitting Gonzalez (57-8, 48 KOs), of Mexico City, will defend his WBC Featherweight World Title against talented once-beaten Russell (25-1, 14 KOs), of Capitol Heights, Md.

The telecast opener will match undefeated rising star Jermell "Iron Man" Charlo (25-0, 11 KOs), of Houston, against the battle-tested Martirosyan(35-1-1, 21 KOs), of Glendale, Calif., in a 10-rounder for the WBO Intercontinental 154-pound championship.

Earlier on Saturday, SHOWTIME Sports® will present the Sky Sports telecast of the IBF Welterweight World Championship between defending champion and hometown favorite Kell Brook and No. 1 challenger Jo Jo Dan live on SHOWTIME at 6:15 p.m. ET/3:15 p.m. PT from the Motorpoint Arena in Sheffield, England. Sky Sports' Jim Watt and Nick Halling will call the action from ringside.

Tickets for this Saturday's stacked DiBella Entertainment fight card are priced at $200, $100, $75, $50, and $25, plus applicable fees are on sale. Tickets may be purchased by calling Ticketmaster at (800) 745-3000 or by clicking HERE. Tickets are also available online at www.ticketmaster.com.