Stat Lab

The Number.

Pick a game, give it the line, and see what real games say: how often that favorite wins, how often it covers, what the price is worth, and what each half point buys.

The game

Negative means Chiefs is favored. Your number is the spread you think is right; leave it blank to see the market on its own.

The bet
Side

Break-even at -110 is 52.4%. The market's number is right on average, so you need about a point of real edge before −110 pays.

How this works

6,999 regular-season games, 1999–2026, from nflverse. For the number you enter, the model takes every game that closed at that spread and reads off what actually happened — so the piles on 3 and 7 are real, not assumed. Win probability also shows the classic normal model (σ = 13.2 points).

Chiefs wins
79%
Normal model 76% · favored by 9.5
Chiefs -9.5 covers
47%
push 0% · lose 53%
EV at -110
−11.0
per 100 risked
Fair price
+115
what this side should cost

How Chiefs -9.5 games end

Final margin from Chiefs's side in 502 games that closed within 0.5 of this number. Green covers, red doesn't, gray is a push. The tall bars are the key numbers.

What a half point is worth

Chiefs at each line nearby. The jump across 3 or 7 is why books charge 25 and 15 cents for those half points.

LineCoverPushvs marketEV
-7.551.2%0.0%+4.6 pts−2.3
-847.8%3.4%+1.2 pts−5.3
-8.547.8%0.0%+1.2 pts−8.7
-946.6%1.2%0.0 pts−9.8
-9.5market46.6%0.0%—−11.0
-1041.0%5.6%−5.6 pts−16.1
-10.541.0%0.0%−5.6 pts−21.7
-1139.4%1.6%−7.2 pts−23.1
-11.539.4%0.0%−7.2 pts−24.7

Six-point teaser

Move this side six points in its favor. Worth it when it crosses both 3 and 7 and the price is right; at −120 for two legs you need each leg to hit about 74%.

Chiefs teased to
-3.5
crosses 7
Covers teased line
65%
push 0% · need ~74% per leg

A two-leg teaser at −120 breaks even when both legs hit 74% of the time; at −110 it's 72%. Legs that cross 3 and 7 — favorites of 7.5 to 8.5 and underdogs of 1.5 to 2.5 — are the classic candidates.