What happened: The Chicago Bears-Green Bay Packers rivalry was put forward as a candidate for the greatest in American sports history. The debate spans team and individual rivalries across eras.

Why it matters: The matchup’s longevity and repeated divisional stakes have made it a durable part of NFL history. Comparing rivalries across sports also weighs cultural impact against competitive balance and championship significance.

What to watch: The debate turns on whether longevity, intensity or historic stakes should carry the most weight.