Jefferson County coroner said Burnett Jr died on Wednesday evening after nearly five weeks fighting for his life in hospital.
An American football player has died a month after suffering a head-on-head collision during a college game.
Medrick Burnett Jr was playing for Alabama A&M University against Alabama State University on 26 October – the day before his birthday – when the severe injury occurred.
His sister said on his GoFundMe page that the 20-year-old linebacker had “several brain bleeds and swelling of the brain” following the collision in Birmingham, a city in the southeastern US state.
In a “last resort” to save his life, Dominece James said he’d had a craniotomy – the surgical removal of part of the skull to expose the brain.