At the time of his retirement, Cox was the NFL's second all-time leading scorer (with 1,365 points) behind George Blanda.
[4] His annual chiropractic earnings of about $100,000 were, Cox said, about double what he made as a football player.
Soon after he hired Dan Marty as his partner who helped him run the office while he finished his last 3 years playing with the Vikings.
In 1988 he moved home to Monongahela, PA where he opened a new chiropractic clinic with his daughter, Susan.
Three years later he moved back to Monticello, Minnesota where he practiced chiropractic part time before eventually retiring.
[7][8] Tens of millions of Nerf football have been sold, first for Parker Brothers and then for Hasbro, which acquired it in 1991, bringing Cox and his partners decades of generous royalties.