Teaser Calculator
See whether your teaser actually crosses the numbers that make it worth it.
| Leg | Teased to | Cover % | Key numbers |
|---|---|---|---|
| -8.5 | -2.5 | 71.0% | 3 + 7 |
| -7.5 | -1.5 | 70.9% | 3 + 7 |
Every leg crosses both 3 and 7.
This is the classic teaser shape, the one worth doing. Each leg is moving through the two numbers football results land on most, which is where almost all of a teaser's value comes from.
Pick a league and teaser size, enter each leg at the spread you would bet it, and the calculator shows what each leg becomes, how often it covers, and whether the whole ticket is priced fairly.
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How the Teaser Calculator works
Why teasers live and die on key numbers
A teaser buys points, and points are only worth what the numbers you cross are worth. Football results pile up on 3 and 7, so a leg that moves through both is worth vastly more than one that moves through neither, even though both bought exactly six points. That is the whole game.
What a Wong teaser is
Named after Stanford Wong, it is the shape where every leg crosses both 3 and 7: favourites of -7.5 to -8.5 teased down through both numbers, or underdogs of +1.5 to +2.5 teased up through them. It became famous because those crossings are where nearly all of a teaser's value sits.
Why most teasers are bad bets
Teasers feel safe because every line moves in your favour, but you pay for the move and the legs still have to all win. Teasing a -12 favourite to -6 crosses only 7 and buys a lot of points results rarely reach. The calculator makes that visible by showing which numbers each leg actually moved through.
Reading the fair price
The fair price is what the combined probability is worth with no margin attached. Compare it against what you are actually offered. Legs are multiplied, which assumes the games are independent, so treat correlated legs, such as two teams in the same game script, as optimistic.
Which teasers are actually worth it
Four two-leg 6-point NFL teasers, all priced at a typical -120. Every one buys exactly the same twelve points across two legs. The only difference is which numbers those points move through, and it is worth about five percentage points of win rate per leg.
| Teaser shape | Per leg | All legs hit | Fair price | Keys crossed |
|---|---|---|---|---|
| Wong favorites -8.5 and -7.5 | 71.0% | 50.3% | -101 | 4 |
| Wong underdogs +1.5 and +2.5 | 71.2% | 50.8% | -103 | 4 |
| Crosses 7 only -12 and -11 | 67.3% | 45.5% | +120 | 2 |
| Crosses nothing +8 and +9 | 66.1% | 44.0% | +127 | 0 |
A note on how strict this model is. It uses the same key-number weights as the compare lines calculator, which are deliberately conservative on the value of 3. Published Wong teaser win rates tend to run a few points above what this produces, which is enough to move a marginal ticket from negative to positive. Treat the verdict as the cautious end of the range, and if you want to see the effect of a stronger 3, raise its multiplier in the advanced panel on the compare lines calculator.
To value a single half point rather than a full teaser, use the half point calculator. For odds at every alternate number, use the alternate lines calculator.
Frequently asked questions
What is a teaser bet?+
A teaser is a multi-leg bet where every spread moves a set number of points in your favour, commonly six in the NFL, in exchange for a much shorter price. Every leg still has to win.
What is a Wong teaser?+
A Wong teaser is a 6-point football teaser where each leg crosses both 3 and 7, using favourites of -7.5 to -8.5 or underdogs of +1.5 to +2.5. Those two numbers are where football results land most often, so crossing both captures most of the value a teaser can offer.
Are teasers good bets?+
Only when the legs cross the key numbers, and even then the price matters. A teaser that moves through neither 3 nor 7 is buying points where results rarely land, which is why most teasers lose money over time.
How do you calculate teaser odds?+
Work out how often each teased line covers, multiply those probabilities together for the chance all legs hit, then convert that combined probability to odds. Compare the result against the price you are offered.