Thurman vs. Diaz, a 12-round fight for Thurman’s Interim WBA Welterweight World Championship on Saturday, April 26, is promoted by Golden Boy Promotions and sponsored by Corona, AT&T and Casamigos Tequila.  It will take place at StubHub Center in Carson, Calif., and will air as the main event of the SHOWTIME CHAMPIONSHIP BOXING® telecast   (9 p.m. ET/6 p.m. PT) and will be available in Spanish via secondary audio programming (SAP).  In the co-feature, Argentine knockout artist Lucas Matthysse faces hard-hitting John Molina in a 10-round junior welterweight bout that is presented by Golden Boy Promotions in association with Goossen Tutor Promotions.  In the opening bout of the telecast, Omar Figueroa Jr. defends his WBC Lightweight title against fellow Texan Jerry Belmontes.  Preliminary fights will air on SHOWTIME EXTREME®.