BIRMINGHAM, AL. (July 13, 2016) – Heavyweight world champion Deontay Wilder, two-time heavyweight title challenger Chris Arreola, undefeated welterweight Sammy Vasquez Jr. and Olympic Gold medalist Felix Diazparticipated in a media workout Wednesday as they near their respective Premier Boxing Champions on FOX and FOX Deportes matchups taking placeSaturday, July