In a dream season, Dan Campbell’s Detroit Lions are trying to make history and restore the Motor City to ultimate football glory. West of the Mississippi, Patrick Mahomes’ Kansas City Chiefs are trying to achieve something no one ever has in the NFL’s modern era — a three-peat.

The playoffs are set to begin this weekend as the Houston Texans and 13 other teams battle for dominance and the title as the reigning Super Bowl champions.

The Lions move back into the top spot after their decisive win over the Vikings, plus one lesson learned for every NFL team.