NATIONAL HARBOR - WBC Featherweight World Champion Gary Russell Jr. (28-1, 17 KOs) and unbeaten No. 1 contender Joseph "JoJo" Diaz Jr. (26-0, 14 KOs) hosted a press conference and faced off for the first time Tuesday before their championship showdown Saturday, May 19 live on SHOWTIME from MGM National Harbor in Maryland.

Tickets for the event, which is promoted by TGB Promotions in association with Golden Boy Promotions, are on sale now and are available by visitinghttp://mgmnationalharbor.com/.

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The Russell vs. Diaz fight is part of a split-site SHOWTIME CHAMPIONSHIP BOXING telecast that will feature WBC Light Heavyweight World Champion Adonis Stevenson defending his title against two-division world champion Badou Jack in a main event from Toronto presented by Premier Boxing Champions.

Russell Jr., a 2008 U.S. Olympian and 126-pound titleholder since 2015, will defend against his mandatory challenger in the 25-year-old Diaz, who represented the U.S. at the 2012 Olympic games and will be competing in his first title bout.

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