George Chuvalo, a Canadian heavyweight boxer renowned for his resilience and toughness, died on September 12, 2026, his 89th birthday, after a prolonged battle with advanced dementia. Throughout a professional career spanning 93 fights, Chuvalo was never knocked down, a feat that earned him high praise from legendary boxer Muhammad Ali, who called him “the toughest guy I ever fought.”

Chuvalo is perhaps best known for his two high-profile matches against Ali. Their first encounter took place in 1966 at Toronto’s Maple Leaf Gardens in a 15-round world title fight. Ali won the bout by unanimous decision, but the match left Ali requiring hospital treatment due to the physical toll, while Chuvalo notably went out dancing with his wife shortly after. The pair met again in 1972 in Vancouver, where Ali once more emerged victorious by decision as Chuvalo again endured the full distance without being knocked down.

Beyond these bouts, Chuvalo’s reputation was built on his formidable endurance and ability to withstand punishment, earning him a lasting place in boxing history. He is survived by two of his five children from his first marriage.