Conversation so far:
When did Pete Pihos play professional football?
Pete Pihos was selected by the Philadelphia Eagles in the fifth round of the 1945 NFL Draft, but he continued to play for Indiana in 1945 and 1946.
How long did Pete Pihos play for the Eagles?
During his nine seasons of play with the Eagles, Pete Pihos missed just one game.

Question: What year did he retire?
Self-contained rewrite: What year did Pete Pihos retire?