Tim Hague, a former UFC and WSOF fighter, died on Sunday at the age of 34 in Canada.
The veteran heavyweight, a native of Alberta, died in Edmonton, two days after a knockout loss during a professional boxing match against Adam Braidwood.
"It is with incredible sadness, sorrow and heartbreak to report that Tim has passed away today," his family said in a statement. "He was surrounded by family, listening to his favorite songs. We will miss him with so greatly. We ask for privacy during this difficult time."
Hague (21-3), who made his mixed martial arts debut in 2006 and last fought in 2016, had previously suffered eight knockout losses in MMA.