The Chiefs open 29th. Here is the math behind the fall.

Kansas City opens the 2026 season rated 1432, which is 29th out of 32 and 187 points below Seattle. For a franchise that spent most of a decade at the top of every rating system, that is the kind of number that makes people want to check the code. So let us check the code.

Elo has no memory of dynasties

A rating system that remembered 2023 would be a worse forecasting tool, not a better one. The only inputs are results: who played, who won, by how much, and how good the opponent was at the time. Kansas City went 6-11. Each loss transferred rating points to the winner, scaled by margin and by how surprising the result was. Losing as a 1550-rated team is expensive precisely because the model expected the opposite.

The K factor is 28, which caps how fast any single game can move a team — roughly 14 points on a coin-flip game, more when the result was a genuine upset, and multiplied further by margin of victory. Eleven losses at that rate is how a top-five rating becomes a bottom-five rating in one season without a single subjective input.

The blend did not rescue them either

Three of the four measured terms had a chance to argue that 6-11 understated the team. None did much:

• Elo (80% weight): 6-11 with unremarkable margins. No case here.
• Pythagorean (5%): points scored and allowed implied a record close to the real one, so the team was not obviously unlucky.
• Form (15%): the closing six games are double-weighted, and a strong finish is the fastest legitimate way back up the board. Kansas City did not produce one.
• Roster adjustment (capped at 40 points): set to zero. No hand-entered credit was applied.

What the forecast actually says

Twenty-ninth in rating does not translate to twenty-ninth in the standings. Across 10,000 simulated seasons the Chiefs project to 7.8 wins with a 35% chance of reaching the playoffs. That is a below-average team in a league where below-average teams make the tournament all the time — and it is a far cry from the write-off the raw rank suggests.

This is the honest version of the disagreement between the model and the market. If you believe the roster is materially better than its 2025 results, the model does not have a way to know that yet. It will find out the same way it finds out everything: by grading the next set of games. Offseason regression already pulled every team a quarter of the way back toward 1500, and a 3-1 start would move Kansas City up the board quickly.

The model is not predicting the Chiefs are bad forever. It is refusing to give credit for seasons that already happened.