The numbers, worn by the Chiefs

The Chiefs went 5-1, but a record is a result, not an explanation. The explanation starts with EPA/play: Buffalo-style, every snap either moved the expected score or it didn’t. The Chiefs offense averaged +0.104 — 7th of 32, meaning a typical snap gained about 0.10 points of expected score. Their defense allowed -0.046 per play (5th — remember, lower is better on defense).

Success rate tells you the texture: 46.6% of snaps kept them on schedule against a league average near 44%. Pair that with pace and you get identity: at 29.8 seconds a snap they ran the 21st-fastest offense of 32 — middle of the league in tempo.

Raw EPA flatters teams with soft schedules, so the net rating re-solves it against opponents: +0.101est.. Multiply by the fitted 15.1 points per unit and the Chiefs are worth about +1.5 points against a league-average team on a neutral field — that number, plus era-fitted home field and the QB adjustment, is the whole model margin on every game card.

Playoff odds come from 10,000 simulated seasons — full scores, because tiebreakers need points. The Chiefs made the field in 88% of them, won the division in 61%.

Settle every game against its closing spread and you get the ATS record: 3-3, beating their number by +2.1 points per game on average. As favorites they went 3-2; as dogs 0-1. Their games went 2-4 to the over. Descriptive, not predictive — 52.38% is break-even at standard vig, and last season’s cover rate does not persist.

A concrete game: Chiefs at Seahawks, week 7, closed at SEA -3. That line sits on a key number, so the model prices a 7.5%est. push — and ½-point at risk of 7.5%, which is why buying the half point matters here and not at 5½.

Where the model margin and the market disagree, remember the disagreement entry: model-preferred sides have gone 49.93% ATS. The market is the sharper instrument; the model is the explainer.