A same game parlay, SGP for short, is one bet that combines two or more selections from a single game and pays only if every one of them wins. Sportsbook rules use both names: FanDuel’s write “Same Game Parlays (SGP’s).”
The difference from an ordinary parlay is in the price. Legs from separate games are multiplied together. Legs from one game affect each other, so the sportsbook prices the combination itself. Covers, in a guide updated August 24, 2025, built an NBA same game parlay whose legs multiplied to +673 and found FanDuel offering +496 on it.
Why legs from one game are linked
Take Seattle at Denver on Thursday, October 15, 2026. FanDuel’s prices on October 13 were as follows.
| Leg | Price | Decimal | Implied chance |
|---|---|---|---|
| Seattle moneyline | about -154 | 1.65 | 60.61% |
| Seattle -3 | about -106 | 1.94 | 51.55% |
| Over 41.5 | about -105 | 1.95 | 51.28% |
Put the first two legs together. Multiplied, they come to 1.65 x 1.94 = 3.20, or +220. But Seattle cannot cover -3 without winning the game, so the pair wins exactly when the spread bet wins, and the spread bet alone pays 1.94. A book that paid +220 would be paying about $220 on a $100 bet that should make $94.
That is the extreme case, where one leg settles the other. The house rules FanDuel posts for Massachusetts, in the version effective July 30, 2026, cover it for ordinary parlays: they “are not accepted when there are related contingencies (i.e. where the outcome of one event is likely to affect the odds on the outcome of another event).” The same rules name the SGP as its own bet type, beside the straight bet and the parlay.
How a same game parlay is priced
Most pairs are linked in part. Seattle -3 with over 41.5 multiplies to 1.94 x 1.95 = 3.78, about +278, which needs both to win 26.43% of the time. Whether a favorite covering makes the over more or less likely in this game is the book’s estimate to make. We did not read FanDuel’s same game parlay price for the pair, so the +278 here is only the legs multiplied.
The size of the link is measured by correlation, a number from -1 to 1 that says how far two results move together. For two legs that each win half the time, the chance both win is 25% with no link, and every 0.2 of correlation moves it by 5 points.
Two -110 legs multiplied pay +264, and +264 breaks even at 27.44%. Legs with a correlation of 0.2 win together 30% of the time, so a book paying +264 on them would lose $9.34 per $100 it took. Legs that work against each other, at -0.2, win together 20% of the time, and at +264 the bettor loses $27.11 per $100.
That is the reason to compare before you bet. Multiply the legs yourself, as above, and set the result beside the price on the slip. The gap is what the book charges for the link, on top of its usual margin.
What each leg costs
Every leg carries the book’s margin, and a parlay multiplies it. In the FanDuel prices above, the two sides of the spread imply 104.74% between them and the two sides of the total 104.76%. Strip that margin out and Seattle -3 is a 49.21% bet paid at 1.94, which loses $4.53 per $100 staked over time.
| Bet | Fair chance | Paid at | Result per $100 staked |
|---|---|---|---|
| Seattle -3 | 49.21% | 1.94 | -$4.53 |
| Over 41.5 | 48.95% | 1.95 | -$4.55 |
| Both, multiplied, if unlinked | 24.09% | 3.78 | -$8.87 |
Two legs roughly double the cost before any link is priced in. The table in our guide to what a parlay bet is carries the same arithmetic to six legs at -110, where the cost reaches $24.36 per $100.
When a leg is voided
FanDuel’s Massachusetts rules settle a same game parlay like any other parlay: “If a selection within the wager is voided, the wager odds will be re-calculated using the remaining legs.” A three-leg bet with one void leg becomes a two-leg bet, and a bet left with one leg stands as a single.
For football player props, the same rules say “only when a player does not play a snap in that game are the selections voided.” A receiver who plays one snap and leaves hurt is a live leg under that rule. These are one book’s rules in one state, and each book writes its own, so read the house rules where you bet. Our NFL props guide explains the markets themselves.
SGP, standard parlay or teaser
A standard parlay takes legs from different games at the multiplied price. A same game parlay takes legs from one game at the book’s own price. A round robin splits one list of picks into several smaller parlays, so one loss does not end all of them.
A teaser moves every spread or total in your favor, and FanDuel’s rules say its payoff comes “from a fixed payout chart” and not from the leg prices. The cap is shared by all of them: the same rules limit winnings to $1 million per bet, “straight, parlay, SGP, or other.”
The prices above illustrate the arithmetic and are not a pick. Our calls on this week’s games, each with its price, are on the NFL predictions hub.
Prices: FanDuel via Nucleus, seen at 05:10 UTC on October 13, 2026. American prices are converted from the two-place decimal prices the feed holds.