John Elway's sister, Lee Ann, died shortly before Elway was reportedly behind the wheel in a golf cart accident that killed Jeff Sperbeck

Former NFL star John Elway's longtime business partner and former agent has died after reportedly falling from a golf cart. Jeff Sperbeck, 62, died Wednesday from injuries suffered in an accident Saturday evening in La Quinta, California, the Riverside County Coroner confirmed to ABC News.

Jeff Sperbeck, a longtime agent to the former Denver Broncos quarterback, died after he reportedly fell off a golf cart that Elway was driving.