Knox spent 22 years as a coach in the National Football League, starting his career with the Los Angeles Rams in 1973.
He departed after the 1977 season to take over the Buffalo Bills and he guided the team to two playoff appearances in five seasons.
Knox returned to the Rams and experienced three straight poor seasons - going 15-33 from 1992-94 - to end his National Football League head-coaching career.
Knox also coached the Rams and the Seahawks during his time in the NFL.
"He was wonderful in his ability to tailor his teams to the talent that he had", said KIRO-TV's Steve Raible, the voice of the Seahawks.
Knox was an offensive line coach before landing the Rams' job in 1973 and going 12-2, the first of five straight 10-win seasons with the franchise. "We hold his family in our thoughts and prayers during this hard time". He spent nine seasons with Seattle. "A member of the Seahawks Ring of Honor, Knox coached the Seahawks from 1983-1991 and was a beloved figurehead by players, coaches and staff".
He was nicknamed "Ground Chuck" for his emphasis on the run game.
"Chuck Knox was the best coach I ever had", Hall of Fame Rams guard Tom Mack told the Los Angeles Time. "I really enjoyed playing for him. But at the same time, he really was a players' coach", Largent continued. One of Knox's most memorable phrases was "what you do speaks so well, no need to hear what you say". He became the second winning coach in the team's history.
Knox reportedly was suffering from dementia and recently entered hospice care. He is survived by his wife, Shirley, his three children and six grandchildren.
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