Guerrero vs. Kamegai is a 12-round fight promoted by Golden Boy Promotions and sponsored by Corona and AT&T. In the co-main event Gary Russell Jr. faces Ukrainian star Vasyl Lomachenko in a 12-round showdown for the vacant WBO World Featherweight Title and in the opener Devon Alexander will face off against Jesus Soto Karass in a 10-round super welterweight match up. It will take place at StubHub Center in Carson, Calif., and will air as the SHOWTIME CHAMPIONSHIP BOXING main event live on SHOWTIME (10 p.m. ET/7 p.m. PT) and will be available in Spanish via secondary audio programming (SAP).