Jeff Sperbeck, the longtime friend, business partner and former agent of John Elway, died Wednesday from injuries suffered when he fell off a golf cart reportedly being driven by the Hall of Fame quarterback. "I am absolutely devastated and heartbroken by the passing of my close friend, business partner and agent Jeff Sperbeck," Elway said in a statement Wednesday. According to TMZ, Elway was driving the golf cart when Sperbeck fell off and hit his head on asphalt. "We are deeply saddened to share the passing of our beloved Jeff Sperbeck. He represented more than 100 NFL players during a three-decade career as an agent and business adviser.