The math behind when teasers actually offer positive expected value
A teaser is a parlay where you can adjust point spreads in your favor in exchange for reduced odds. All legs must win.
Payout: 2-team, 6-point teaser typically pays -110 to -120
Teasers become profitable when you cross key numbers (3 and 7) on both legs. Crossing key numbers significantly increases win probability, often by more than the reduced payout suggests.
For a standard 2-team, 6-point teaser at -110:
Break-even requires:
The question: Can crossing key numbers push each leg above 72.4%?
| Original Line | Teased To | Keys Crossed | Est. Win % |
|---|---|---|---|
| -7.5 to -8.5 | -1.5 to -2.5 | 7 and 3 | 74-78% |
| -2.5 to -3 | +3 to +3.5 | 3 (both sides) | 73-76% |
| -4.5 to -5 | +1 to +1.5 | 3 only | 68-72% |
| -10 | -4 | 7 only | 65-70% |
Named after gambling author Stanford Wong, this strategy identifies +EV teaser opportunities:
| Type | Points | 2-Team Odds | Recommendation |
|---|---|---|---|
| Standard | 6 | -110 to -120 | Best value |
| 6.5-point | 6.5 | -120 to -130 | Marginal |
| 7-point | 7 | -130 to -140 | Avoid |
| Sweetheart/Monster | 10-13 | Varies | Avoid |
You can also tease totals, but they're generally less valuable:
Totals don't have the same "key number" structure as spreads. Points cluster around 41, 44, 47, 51 but not as dramatically as 3 and 7 for margins.
Crossing through 40-43 and 48-51 ranges can add value, but it's harder to identify clear +EV spots.
Adding more legs to teasers changes the math:
| Legs | Typical Odds | Required Win %/Leg | Assessment |
|---|---|---|---|
| 2 | -110 | 72.4% | Best value |
| 3 | +150 to +180 | 68-70% | Marginal |
| 4+ | Varies | 65-68% | Generally -EV |
The trap: More legs look appealing because of better odds, but the math rarely works in your favor unless all legs cross key numbers perfectly.
-110 vs -120 matters significantly over time
Not every week has good teaser opportunities
Some books count ties as losses on teasers - avoid these
It's okay to skip a week if only one good leg exists
Document which teasers you take and why
-7.5, -8, -8.5 → teased to -1.5, -2, -2.5
+1.5, +2, +2.5 → teased to +7.5, +8, +8.5