Veteran mixed-martial-arts fighter Joe “Diesel” Riggs will make his professional boxing debut May 23rd on a card presented by Roy Jones Jr. (RJJ Boxing) Boxing Promotions, to be streamed on UFC FIGHT PASS®, starting at 10 p.m. ET / 7 p.m. PT, live from Casino Del Sol’s outdoor AVA Amphitheater in Tucson, Arizona. Riggs, fighting […]