According to television station Fox32 in Chicago, mixed martial artist Isaac Johnson, age 31, collapsed near the end of his first "Thai boxing match" at Cicero Stadium on Friday and later died at Loyola Hospital. Johnson had passed a state-required physical before the fight and was competing in what was billed as the Matador Fighter Challenge. The Illinois Department of Financial and Professional Regulations is investigating; the cause of death has not been released.

 

Promoter Joe Goytia wrote on social media, "This is a post I hoped to never make. Last night one of the fighters in our event, Isaac Johnson, collapsed towards end of his fight. Medical attention was given by medical staff on hand and he was transported to hospital. I was then informed at around 1:30 AM [Sunday] morning that he didn't make it. I don't have the words to express how I feel right now. All I can say is my deepest condolences to his family, friends and teammates. We will know more as the medical report is released.