To understand why Forrest Gregg was able to lead the Bengals to a Super Bowl, you must first understand Gregg as a player. Tough is really the only word to describe him. Even that is almost too light of an adjective.
Gregg wasn’t just a Hall of Fame offensive lineman, he was a Hall of Fame offensive lineman who spent the bulk of his career playing for the Vince Lombardi Packers. Even today, you still see clips of how those teams beat opponents into submission. The power running game, specifically the power sweep was Lombardi’s weapon of choice.