Conversation so far:
Did anything happen significant in the 1979 series?
Dierforf sustained torn ligaments in his left knee during an extra point attempt.
Who did he play for during these seasons?
against the New York Giants.
He was against the Giants?
Who did he play for?
Cardinals.

Question: Did he ever get hurt during these seasons?
Self-contained rewrite: Did Dan Dierdorf ever get hurt during thes 1979 to 1983 seasons?