Jeff Sperbeck, friend and agent of former NFL quarterback John Elway, died of blunt head trauma suffered during a golf cart accident on April 26, according to a coroner's report described by TMZ Sports. The Riverside County Sheriff's Office Coroner's Bureau has ruled Sperbeck's death as an accident, according to TMZ.

Hall of Fame Broncos quarterback John Elway was behind the wheel when his longtime agent, Jeff Sperbeck, fell off a golf cart Saturday night and suffered injuries that have left him on life support, according to TMZ.

Jeff Sperbeck's cause of death has been revealed. The longtime agent and friend of NFL legend John Elway reportedly died of blunt head trauma, the Riverside County Sheriff's Office told TMZ on Friday,