Golden Boy Boxing on ESPN: Gamboa vs. Castellanos is a 10-round lightweight fight presented by Golden Boy Promotions in association with ZR Entertainment and sponsored by Tecate BORN BOLD. ESPN2 and ESPN Deportes will transmit the fights live on Friday, May 5 from the MGM Grand Garden Arena at 5:00 p.m. PST/8:00 p.m. EST. ESPN Deportes will also air the undercard matches, starting at 7:00 p.m. ET/4:00 p.m. PT. The same bouts will also run at the same time in English, on ESPN3, with TV coverage starting at 8:00 p.m. ET/5:00 p.m. PT on ESPN2.