Isaac Johnson cause of death: How did the Chicago MMA fighter die at 31 | International Sports News
Isaac Johnson cause of death: How did the Chicago MMA star die at 31 (Image via Getty) Isaac Johnson was a 31-year-old MMA and Thai‐boxing fighter from Chicago. On Friday night, he competed in a heavyweight Thai boxing match at the Matador Fighter Challenge, held at Cicero Stadium in Cicero, Illinois. Near the end of…