Facing fan fatigue, a frequent champion is asked to embrace the dark side. It isn’t convincing.

The Kansas City Chiefs defense has been unstoppable this season and that is thanks to the genius of one man: coach Steve Spagnuolo. Spags does his homework on opposing teams. He’s a pro at holding a ...

What used to be one marquee of lights featuring the name of Kansas City’s beloved team has turned into nearly a dozen displays.