Joe Kapp, the rugged quarterback who spent eight seasons in the Canadian Football League before making it to the N.F.L.
with the 1967 Minnesota Vikings, then took them to Super Bowl IV in January 1970, died on Monday in San Jose, Calif.
His son, J.J. Kapp, said the death, at an assisted living facility, was caused by complications of dementia.
In the N.F.L., he gained a reputation for resilience in the face of injury.
“I’ve played with cracked ribs and a punctured lung and a torn knee and separated shoulder and a half-dozen other injuries,” he wrote in a first-person article.