Parlay Betting
A parlay combines multiple bets into a single wager with a multiplied payout. The catch: every leg must win. One losing leg loses the entire parlay.
How Parlay Math Works
Parlay odds are calculated by multiplying the decimal odds of each leg. Three -110 legs (decimal 1.91 each) become 1.91 × 1.91 × 1.91 = 6.96, or roughly +596 in American odds.
Typical 2-leg parlay payouts:
- 2 legs at -110: ~+265
- 3 legs at -110: ~+595
- 4 legs at -110: ~+1228
- 5 legs at -110: ~+2435
Why the House Loves Parlays
Each leg carries its own ~4.5% house edge (the -110 vig). When you parlay them together, those edges compound. A 4-leg parlay has an effective house edge in the high teens or above; that’s why books promote them. Recreational bettors chase the big payout; the math is brutal.
Same-Game Parlay (SGP)
Many books now offer parlays of multiple markets within a single game (e.g., Packers ML + Jordan Love over 250 passing yards + Romeo Doubs anytime TD). Because the legs are correlated, the book uses adjusted pricing; generally not a +EV market for casual bettors.
When Parlays Can Make Sense
- Plus-money legs you actually like: Parlaying two +130 sides is fundamentally different from chasing six -110 favorites.
- Boosted parlays: Sportsbook promo parlays sometimes carry +EV. Read the terms.
- Cards with high natural correlation: A UFC main-card parlay around a heavy favorite is the classic example.
What to Avoid
- Long parlays of -200+ chalk favorites; the implied probability is high but the compounded juice is worse than betting them individually.
- Parlays as a way to make a small bankroll feel like it has chase potential; that’s how the house wins.
Wisconsin Availability
Available at every WI retail sportsbook. UFC card parlays are particularly popular at Potawatomi on title-fight nights.