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Vinny · The book
“One second. Counting the house money.”
“One second. Counting the house money.”
The parlay is the single most profitable product in sports betting for the book. There's a reason it's advertised everywhere.
A parlay combines multiple bets into one ticket, and all legs must win to cash. The odds compound — and so does the vig: a fair two-leg parlay pays +300, but books typically pay +260, taking their cut twice. The more legs you add, the larger the built-in house edge.
I love parlays. I love them so much. You know why? Because every leg multiplies my vig.
A two-team parlay at -110/-110 should pay +300 if the math were fair. I pay +260. Sounds close, right? But over millions of parlays, the compounding vig difference is enormous. And you feel like a genius when you hit — I pay you $260 on your $100 and you tell everyone. The twenty times you lost the same bet? You don't post those. Parlays are legal lottery tickets with better marketing.
I've hit a few parlays. I remember every single one of them. I can tell you the teams, the odds, what I spent the money on.
I've lost hundreds of parlays. I can't tell you a single one. They just blur together into a number I don't want to think about. The hits feel like winning. The losses feel like "just one of those things." That asymmetry in how I experience them is, I'm pretty sure, exactly why I kept doing it.
A parlay combines multiple bets into one, with each win required to collect. The odds compound — and so does the vig.
Two-team parlay math: true fair odds at 50/50 per leg = +300. Typical sportsbook payout = +260. That gap is the house edge extracted twice. Three-team: fair = +700. Typical = +600. The more legs, the more it compounds.
Parlays aren't necessarily wrong — if each individual leg is genuinely +EV, combining them is mathematically fine. The problem is using parlays as a substitute for handicapping: throwing together three teams you "like" because the payout looks exciting. Same-game parlays are even worse — the book prices the correlations between legs out of the odds before you ever place the bet.
A parlay combines two or more bets into a single wager. Every leg must win for the ticket to pay, and the legs' odds multiply together for a larger potential payout.
Each leg compounds the sportsbook's vig, so parlay payouts fall short of the true fair odds. A fair two-leg parlay is +300, but books commonly pay around +260.
Only if each individual leg is genuinely +EV on its own — then combining them is fine. Stacking teams you "like" for a bigger payout is where parlays turn into a trap.