The numbers, worn by the Chiefs

The Chiefs went 1-0, 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 +0.118 — 11th of 32, meaning a typical snap gained about 0.12 points of expected score. Their defense allowed -0.378 per play (1st — remember, lower is better on defense).

Success rate tells you the texture: 40.9% of snaps kept them on schedule against a league average near 44%. Pair that with pace and you get identity: at 31.1 seconds a snap they ran the 19th-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: +0.849est.. Multiply by the fitted 15.1 points per unit and the Chiefs are worth about +12.8 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 99% of them, won the division in 89%.

Settle every game against its closing spread and you get the ATS record: 1-0, beating their number by +18.5 points per game on average. As favorites they went 1-0; as dogs 0-0. Their games went 0-1 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: Colts at Chiefs, week 2, closed at KC -6.5. On this half-numbered line a push is impossible; its ½-point at risk is 2.3% — the mass that flips outcome if the line moves. See the lattice on the game page.

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.