Opponent who put boxer in a coma speaks out: 'I never meant for this to happen'

The 21-year-old boxer who knocked out Patrick Day, leaving him fighting for his life in the hospital, posted an emotional letter addressed to his opponent on Twitter Monday night.

Charles Conwell revealed that he has considered quitting boxing and has shed "so many tears" since the bout on Saturday, which Day left on a stretcher. Day, 27, received medical treatment while in the ring and had multiple seizures on the way to the hospital, where he has been ever since.

"I never meant for this to happen to you," Conwell's heartwrenching letter begins.

Conwell also clarified that the letter would be the final time he spoke on the matter due to its sensitive nature for Day's family and friends, as well as the sport of boxing.

Day's life-threatening injuries occurred just over two months since the deaths of boxers Maxim Dadashev and Hugo Santillán, who both passed away after being seriously hurt in fights.

The latest update on Day, provided by DiBella Entertainment, states that the boxer "suffered a traumatic brain injury" in the fight and underwent emergency surgery. Day is currently said to be in "extremely critical condition" as of Monday.