Devigging is the process of removing the sportsbook's margin from a line to reveal the true probability underneath. When a sportsbook tells you something has a 58% chance, that number includes their vig. Strip it away, and the real number might be 55%. That 3% difference changes everything about whether a bet has value.
Think of it like this: You're looking at a price tag that includes the markup. Devigging is finding the actual cost before the store added their margin. The true probability is what the sharpest lines in the world reveal — when you remove the noise, you see the signal.
Why It Matters: Most bettors never see the real numbers. They bet based on what sportsbooks show them — margins and all. Our model does this math on every game, every day, so you don't have to guess.