Two years ago, Bryan Cook got into the end zone on a play that showed the Chiefs were destined for another Super Bowl victory. Trent McDuffie

I think there’s a lot to clean up, obviously,’ offensive coordinator Greg Roman says of preparing to face the Chiefs on Sunday in Kansas City.

The Chiefs are 6-7, a losing record in December for a quarterback who had never owned a losing record past the month of October. There are a dozen reasons why they’re here — or at least seven fourth-quarter failures why — and I’ve offered plenty of data points to delve into them.

Line up the offensive stats, and here's what it tells us when comparing the Chiefs' 12-1 start last year to this year's 6-7 struggle.

The Kansas City Chiefs will likely be without several key pieces to their offense once again when they face the Los Angeles Chargers on Sunday.

The Kansas City Chiefs' loss to the Houston Texans significantly damages their playoff aspirations and highlights underlying issues. This weekend's Chiefs coverage highlights various reactions and analyses of the game, which ended in a 20-10 KC defeat at GEHA Field at Arrowhead Stadium.

The Chiefs’ unraveling hasn’t been limited to turnovers. Injuries along the offensive line have been a central storyline. The losses of guard Trey Smith and tackle Jawaan Taylor, worsened by Wanya Morris going down in Houston, left the unit scrambling and the offense disjointed.

There's no way around it anymore. The Kansas City Chiefs are actually going into a "must-win" game in Week 15.

Paul Wiggin, who succeeded Hank Stram in 1975 and spent three years leading the Chiefs, died Friday. The passing was announced by the Minnesota Vikings, where Wiggin spent the final 21 years of his NFL career. He was 91.