38 years old. Had just pulled up his fight with Gustafsson on youtube last week, one punch and it was over. Hard to believe he's gone.
Their story
Anthony "Rumble" Johnson was an American mixed martial artist, remembered as one of the hardest punchers ever to compete in the UFC. Born Anthony Kewoa Johnson in Dublin, Georgia, on 6 March 1984, he fought at welterweight, middleweight, light heavyweight and heavyweight across a professional career that ended with a…
Anthony "Rumble" Johnson was an American mixed martial artist, remembered as one of the hardest punchers ever to compete in the UFC. Born Anthony Kewoa Johnson in Dublin, Georgia, on 6 March 1984, he fought at welterweight, middleweight, light heavyweight and heavyweight across a professional career that ended with a record of 23 wins and 6 losses, most of the wins by knockout.
A junior college national wrestling champion at Lassen College in California, Johnson turned to mixed martial arts at 20 and made his UFC debut in 2007 with a 13 second knockout of Chad Reiner, taken on less than a week's notice. Repeated struggles to make weight led to his release in 2012, and he rebuilt his career in Titan FC and the World Series of Fighting, where he beat Andrei Arlovski at heavyweight in 2013.
His return to the UFC in 2014 brought the best run of his career. At light heavyweight he beat Phil Davis, then stopped Antonio Rogerio Nogueira, Alexander Gustafsson, Jimi Manuwa, Ryan Bader and Glover Teixeira, the last in 13 seconds. He twice challenged Daniel Cormier for the UFC light heavyweight title, in 2015 and 2017, and retired straight after the second loss while ranked the division's number one contender.
Johnson came out of retirement with Bellator MMA and knocked out Jose Augusto in May 2021, but withdrew from the light heavyweight grand prix that September because of illness. Away from the cage he launched a CBD company and worked in fighter relations for Bare Knuckle Fighting Championship. His career was also marked by domestic violence accusations and a 2010 no contest plea, documented in public records.
He died on 13 November 2022, aged 38, of organ failure caused by non-Hodgkin's lymphoma and hemophagocytic lymphohistiocytosis. Bellator announced his death, and tributes came from the UFC and fighters across the sport. His name returned to the news in November 2026 when a remark by Arlovski about their 2013 fight drew criticism and an apology, a reminder of how firmly Johnson remained in the memory of the sport.
Biography adapted from Wikipedia (CC BY-SA 4.0), UFC, AP, People and MMA Mania. Wikipedia ↗

That knockout still gets replayed, one of the scariest finishes I've seen