He was traded to the Philadelphia Eagles and then by the Eagles to the Atlanta Falcons, where began his NFL career in 1969. Zook played 144 games in the NFL and was a Second-team All-Pro selection in 1973.
The player moved from the Philadelphia Eagles to the Atlanta Falcons through the Eagles' actions, starting his NFL career in 1969. Throughout 144 games, Zook was selected for the Second-team All-Pro in 1973.