A 27-year-old heavyweight boxer died Thursday, three weeks after he suffered a vicious knockout loss that led to him being put in an induced coma in Miami.

Ardi Ndembo, who was a perfect 8-0 in his career, was brutally knocked out by his opponent, Nestor Santana, while competing in a Team Combat League fight on April 5 and was left unconscious in the ring for several minutes.