The idea that Hagler s death was related to the vaccine appeared to begin after an Instagram post from Hagler s former rival Thomas Hearns, whom Hagler defeated in 1985 with a third-round knockout in what is widely considered to be three of the greatest rounds of boxing in the history of the sport.
In the now-deleted post, Hearns wrote: A real true warrior Pray for the king and his family.. he s in ICU fighting the after effects of the vaccine!
The original message from Hearns was quickly used by those with an anti-vaccination sentiment, with some social media posts receiving thousands of reactions.