John L was a significant expansion for the Seahawks in the 80's. Simply stumbling down the field eating up the yards, he influenced it to look simple once in a while. Yet, some positive ability getting, running, blocking you name it. I for one think John L. was a superior back than Mack entirely on the way that he was an awesome beneficiary also being a strong sprinter and sensational blocker. In any case, that is simply me. In any case, as a straight up blocker , Mack Strong had no peers.