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.

Jeff Sperbeck, 61, a longtime friend and business partner of the legendary Denver Broncos quarterback, is on life support after the incident Saturday in La Quinta, Calif., per the report.

TMZ confirmed that Elway was behind the wheel when Sperbeck fell off the back of the moving cart and struck his head on asphalt.

The California Department of Forestry and Fire Protection told KESQ it responded to an accident involving a golf cart and transported an unnamed patient to Desert Regional Medical Center in Palm Springs. The Riverside County Sheriff’s Office said it is investigating the incident.

Elway and Sperbeck and their wives attended the Stagecoach music festival earlier Saturday in nearby Indio, Calif., according to TMZ.

Elway, 64, and Sperbeck founded 7Cellars winery together in 2013.

Sperbeck, certified by the NFL, represented more than 100 NFL players as an agent and business adviser over a 30-year career, according to his bio on the winery’s website.

Elway played for the Broncos from 1983-98, winning Super Bowl championships in each of his final two seasons. He was inducted into the Hall of Fame in 2004. He returned to the team as an executive in 2011, working as the general manager through 2020 and as president of football operations in 2021.

–Field Level Media