Overview
- Johnson collapsed near the end of his bout at Cicero Stadium on Nov. 21 and received on‑site care before paramedics transported him at 8:38 p.m. to Loyola University Medical Center.
- He was pronounced dead at 12:01 a.m. on Nov. 22, and the Cook County Medical Examiner has scheduled an autopsy to establish the cause and manner of death.
- Cicero police have opened a death investigation, and the Illinois Department of Financial and Professional Regulations is reported to be examining the incident.
- The fight was promoted as a heavyweight Thai boxing match at the Matador Fighter Challenge; the promoter says Johnson passed the required pre‑fight physical and that standard protective gear was used.
- Reports conflict on Johnson’s opponent, with some outlets naming Mario Aleksandrovski while event materials listed Corey Newell, and officials have not clarified that detail.