What this tool is: the spread and the moneyline are two prices on the same event — when they disagree, one is wrong. Convert either direction instantly and catch the disagreement.
The team's spread: -3 favorite, +6.5 dog.
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Win outright
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Fair moneyline
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Opponent fair
Enter both sides and the vig is stripped before converting; one side alone uses raw implied.
A -3 favorite wins outright about 58.8% — fair moneyline ≈ -143. A -7 favorite is ~70%, near -233. When the posted moneyline implies a different spread than the posted spread, one market is stale — and stale markets are where the arb finder and middle finder eat. Sigma 13.45 under the hood, same engine as cover probability.