Same-Game Parlay
A parlay made up entirely of legs from a single game — priced by the book, not by naive multiplication.
Also: SGP · same game parlay
A same-game parlay (SGP) combines two or more bets from a single game into one ticket. Common SGP construction: a moneyline + a player prop + a total. SGPs blew up in popularity once major US sportsbooks started offering them around 2020, and they’re now one of the highest-margin product lines for books.
Why the price isn’t just the legs multiplied
Legs of a same-game parlay are correlated. If Patrick Mahomes throws for 300+ yards, the Chiefs probably won the game and probably went over the total. Naive parlay multiplication would over-pay because it assumes the legs are independent.
So sportsbooks price SGPs with their own correlation models. That price is almost always worse than just multiplying the leg odds straight, sometimes dramatically.
Why books love them
SGPs combine three bookmaker advantages:
- Higher built-in vig than straight bets
- Correlation modeling that favors the house when uncertain
- High-variance product that retail bettors associate with payout, not probability
Casual SGP bettors are betting roughly the same expected-value math as scratch tickets. Books don’t quote the vig on SGPs because it’s often above 15%, sometimes above 30%.
When to use them anyway
If you genuinely believe a narrative — “this game goes high-scoring AND the star RB has a big day AND the home team wins” — SGPs let you express that as a single ticket. That’s a real reason to play them. Just don’t model them as if you’re getting fair odds.
SGPs in our parlay calculator
Our Parlay Calculator assumes independent legs. Don’t use it to price SGPs — feed in the book’s quoted SGP price as a single number if you want to track payout/profit, or use the tool to math out the naive multiplied price and compare it to what the book is actually offering. That gap is the SGP-specific vig.
Cross-game variants
A “same-game-plus” or “cross-game” parlay combines an SGP with a leg from another game. Books price the SGP portion with their correlation model, then multiply that price by the cross-game leg as if it were independent.
Last reviewed: April 26, 2026