In 1972, while still playing for the Vikings, Cox came up with the idea of a soft football to prevent leg injuries to kids. He and partner John Mattox, a local entrepreneur, took a mold of a full-sized football and injected it with soft foam rubber material. The result was the Nerf football.https://www.espn.com/nfl/story/_/id/28132640/ex-vikings-kicker-fred-cox-inventor-nerf-football-dies-80
After football, Cox became a chiropractor and settled in Minnesota.
It’s short. Go RTWT. Football players. Back in the Day.