Conversation so far:
What happened in 1974 to Dan Dierdorf?
From 1974 to 1976, Dan Dierdorf started every game at right tackle for the St.Louis Cardinals.
Are there any other interesting aspects about this article on Dan Dierdorf besides what happened in 1974?
Dan Dierdorf was selected by the National Football League Players Association as the Offensive Lineman of the Year for three consecutive years from 1976 to 1978.
What did Dan Dierdorf do after as Offensive Lineman of the Year for three consecutive years?
On September 9, 1979, Dan Dierforf sustained torn ligaments in his left knee during an extra point attempt.
What did Dan Dierdorf do in the NFL after the 1977 season?
Dan Dierdorf did not allow a sack during the entire 1976 and 1977 seasons. His streak ended in the first game of the 1978 season.

Question: did he retire?
Self-contained rewrite: Did Dan Dierdorf retire from the NFL?