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, May 9. His death has been ruled an accident.

John Elway (l.) was reportedly driving the golf cart his longtime agent Jeff Sperbeck (r.) fell off of on Saturday, suffering injuries that have left Sperbeck on life support.

Former Denver Bronco quarterback John Elway. Elway’s business partner Jeff Sperbeck died after a fall from a golf cart that TMZ reported was driven by Elway last weekend in Riverside County, Calif.

Per TMZ, there is no reason to believe Elway was driving negligently. The two friends and their wives were apparently in La Quinta, CA, to attend the Stagecoach Music Festival.

John Elway, Jeff Sperbeck and their wives were at the Stagecoach music festival in California earlier on Saturday, per TMZ. They were reportedly leaving a post-party when Sperbeck fell off of the ...

Update 4/30 10:47 AM PT -- Jeff Sperbeck passed away at 1:10 AM on Wednesday, officials tell TMZ Sports. 4/29 5:40 PM PT -- We've now confirmed Elway was indeed behind the wheel of the golf cart ...

TMZ is reporting that former Denver Broncos star John Elway was behind the wheel of a golf cart when his longtime agent and business partner Jeff Sperbeck fell off and hit his head.

Pro Football Hall of Fame member John Elway was driving the golf cart when his former agent fell out and sustained a life-threatening head injury last weekend, TMZ reported Wednesday.

The audio of a 911 call former NFL QB John Elway made after agent Jeff Sperbeck fell from a golf cart and sustained fatal injuries has been revealed.

Jeff Sperbeck, a longtime friend and business partner of Hall of Fame quarterback John Elway, died Wednesday morning from injuries he sustained in a golf cart accident over the weekend. He was 62.

TMZ reported Tuesday that former Denver Broncos star John Elway was behind the wheel of a golf cart when his longtime agent and business partner Jeff Sperbeck fell off and hit his head.

TMZ is reporting that former Denver Broncos star John Elway was behind the wheel of a golf cart when his longtime agent and business partner Jeff Sperbeck fell off and hit his head.