MMA Fighter Isaac Johnson has died after reportedly being injured during a match near Chicago Friday night. NBC 5 Chicago reports Johnson collapsed after suffering an injury during his fight against Mario Aleksandrovski at Cicero Stadium. An ambulance was called to the stadium at 8:38 PM local time to transport “an injured fighter” to the hospital ... and Johnson passed away a few hours later, just after midnight. The Cook County Medical Examiner's Office has scheduled an autopsy to determine