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Betting basics · 13 of 36
No-vig price
In one line: The fair price for each side once the book's margin is removed from the market.
Worked example
Using the multiplicative method, the No-Vig calculator with -120 and +100 works like this. The implied chances are 120 divided by 220, or 54.55%, and 100 divided by 200, or 50.00%. Together they add to 104.55%, so the hold is 4.55%. Dividing each by 104.55% gives fair chances of 52.17% and 47.83%, which convert to -109 and +109.
Illustrative prices, not a live quote.
What it is
A no-vig price is the fair price for each side once the book's margin is removed. With the margin gone, the two fair chances add up to exactly 100%.
No book posts a no-vig price. It is a benchmark for comparing prices, not a line you can bet at.
How to read it
Remove the margin from each side's implied chance, then convert back to American. The simplest method, multiplicative, divides each implied chance by the total of the two. Other methods split the margin differently, so their fair prices can differ a little.
You need both sides. With only one side posted, there is no market to remove the margin from.
How it shows in Antic
The No-Vig Fair Odds calculator takes two sides and lets you pick a method, so you can see how much the choice moves the result.
On the Odds tab, tap View all under Game Lines to see a Fair row with each outcome's fair chance. Edge's +EV cards show a FAIR price when Antic has one, and leave it out when there aren't enough current prices to estimate one. How Antic's fair price works is explained in plain words on How Antic's numbers work.
Common mistakes
Expecting every method to match. Multiplicative, power and shin can give slightly different fair prices for the same two sides.
Treating the fair price as a price you can get. It is a comparison point, and the book's own price is the one you pay.