GLENDALE, Calif. – Current world champion Jhonny Gonzalez and once-beaten world ranked welterweight contender Vanes Martirosyan participated in a media workout on Monday at the Main Event Sports Club in Glendale, Calif., six days prior to their respective upcoming fights on Saturday, March 28, at the The Pearl at the Palms Casino Resort in Las Vegas live on SHOWTIME (10 p.m. ET/7 p.m. PT).

In the 12-round main event on the SHOWTIME CHAMPIONSHIP BOXING® doubleheader, the hard-hitting, current WBC Featherweight World Champion Gonzalez (57-8, 48 KOs), of Mexico City, will defend his 126-pound title against talented once-beaten former world title challenger Gary Russell Jr. (25-1, 14 KOs), of Capitol Heights, Md.

In the 10-round co-feature, battle-tested, world-ranked contender Martirosyan (35-1-1, 21 KOs), of Glendale, Calif., will take on undefeated rising star Jermell “Iron Man” Charlo (25-0, 11 KOs), of Houston, in an important super welterweight showdown.

“Gonzalez vs. Russell Jr.”, a 12-round world championship bout for Gonzalez's WBC Featherweight World Title, is promoted by DiBella Entertainment. In the co-feature, Jermell Charlo takes on Vanes Martirosyan in super welterweight action. The event will take place at The Pearl at Palms Casino Resort in Las Vegas and will air on SHOWTIME (10 p.m. ET/7 p.m. PT). The telecast will also be available in Spanish via secondary audio programming (SAP).

Tickets for the live event 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.