Prichard Colón during the fight against Terrel Williams in 2015. (Getty Images via AFP: Patrick Smith)
Prichard Colón, a former boxer who was left with severe brain damage after a fight more than a decade ago, has died aged 33.
His father, Richard Colón, confirmed his son's death in a Facebook post on Thursday.
The post did not detail the Puerto Rican boxer's cause of death.
World Boxing Organization (WBO) president Gustavo Olivieri posted a tribute to Colón on social media.
"Today, the WBO solemnly joins his family and all those who had the privilege of knowing, supporting, and loving him in mourning his passing," Mr Olivieri said.
Colón was injured in a boxing match against Terrel Williams in Virginia in the US in October 2015.
Born in Florida, US, Colón kicked off his boxing career in Puerto Rico, where he won five amateur titles.
He was considered a "rising star" in the lead-up to the nationally televised match, ESPN reports.
Here's how a report from Reuters described the match at the time:
"An online video of the fight showed Williams, a 31-year-old fighter from Los Angeles, punching Colón in the back of the head in the seventh round, a shot that appeared to stun Colón, who was briefly examined in his corner.
"Williams was penalised for the illegal punch.
"Colón was then knocked down twice in the ninth round.
"He was disqualified after the ninth round.
"His corner mistakenly took off his gloves, thinking it was the final round and that the fight was complete."
