Research and entertainment only, not betting advice. 21+ only. Sports betting is not legal in every state. Check your local laws. Problem gambling? Call 1-800-GAMBLER.
Updated November 10, 2026
A parlay is one bet built from two or more individual bets, called legs. Every leg has to win for the parlay to pay. In exchange for that extra risk, the payout is bigger than any single leg would pay on its own. This guide explains how a parlay is graded, why the payout is not simply the odds added together, and how parlays differ from teasers and same-game parlays. Every number below is a labeled hypothetical, not a real game or a current line, and nothing here is a recommendation to bet.
Parlay in One Sentence
A parlay links several bets into one ticket, so a single losing leg loses the whole ticket, and the potential payout grows with each leg you add.
The legs can be any of the standard bet types. A parlay might combine a moneyline bet on one game with a point spread on another and a total on a third. The sportsbook decides which combinations it accepts, and those house rules vary from book to book.
How a Two-Leg Parlay Is Graded
Take a hypothetical two-leg parlay. Leg one is Team A on the moneyline. Leg two is Team B to cover a spread in a different game. The ticket is graded after both games end:
- Both legs win: the parlay wins and pays the combined price.
- One leg wins and one loses: the parlay loses. There is no partial payout for the leg that won.
- Both legs lose: the parlay loses.
That second line is easy to underestimate. Going 1-for-2 on two straight bets usually costs you a little. Going 1-for-2 inside a parlay costs you the full stake.
Why the Payout Is Not Just Adding the Odds
Parlay odds are multiplied, not added. The easiest way to see it is with decimal odds, which show the total return per dollar staked, including the stake.
Hypothetical example: each leg is priced at -110, a common standard price. In decimal terms, -110 is about 1.909. A $10 single bet at -110 returns about $19.09. A two-leg parlay at -110 per leg multiplies the two: 1.909 x 1.909 is about 3.645, so a $10 parlay would return about $36.45, a profit of about $26.45. A three-leg parlay at the same prices would return about $69.58 on $10.
Now compare that to the chance of winning. A -110 price implies about a 52.4% chance per leg, which our guide to implied probability walks through. If two legs are independent, the chance that both hit is 52.4% x 52.4%, or about 27.4%. For three legs, it is about 14.4%.
Here is where the house edge comes in. If each leg were a true coin flip with no margin built in, a fair two-leg payout would be 3-to-1, returning $40 on $10, and a fair three-leg payout would be 7-to-1, returning $80. The -110 parlay returns $36.45 and $69.58 instead. The gap between the fair return and the actual return is the sportsbook's margin, and it compounds with every leg. That is why parlays are not easy money even though the payouts look large.
Parlay vs. Teaser vs. Same-Game Parlay
Teaser: a teaser is a parlay in which you move the point spread or total in your favor on every leg, in exchange for a lower payout. All legs still have to win. Our teaser bet guide covers how the points move and why the trade-off matters.
Same-game parlay: all the legs come from one game, for example a team's moneyline plus a player's yardage total in that same game. Because outcomes inside one game can be related, sportsbooks set their own rules and prices for these tickets rather than simply multiplying the odds. Read the specific book's same-game parlay rules before assuming how a ticket is priced or graded.
Round robin: some books let you split a group of selections into several smaller parlays, so one losing leg does not sink every combination. Each smaller parlay is still graded on the all-legs-win rule.
What Happens on a Push
A push is a tie against the line, such as a team winning by exactly the spread. How a pushed leg affects a parlay depends on the sportsbook's house rules. At some books the pushed leg is removed and the ticket is graded on the remaining legs, but rules differ from book to book and can depend on how many legs the ticket has. Check the rules before you place the bet. Our explainer on what a push means in betting covers how pushes work on straight bets.
A Note on Our Own Research Model
The Sports Hangover model's backtest went 48.7% against closing lines from 2021 through 2025. That's not a proven edge. Nothing in this post is a pick or a recommendation to build a parlay.
Where Parlay Betting Is Legal and Where to Get Help
Sports betting laws are set state by state, and the list changes. The American Gaming Association keeps a state-by-state map of legal sports betting. If betting has stopped being fun, the National Council on Problem Gambling's help and treatment page and the 1-800-GAMBLER support site list free, confidential resources.
Featured photo: the sports betting area at MGM Grand Las Vegas, by Chad Davis via Wikimedia Commons (CC BY 2.0), cropped with a short banner.
Parlay Bets: Frequently Asked Questions
What happens if one leg of a parlay loses?
The whole parlay loses. Every leg has to win for the ticket to pay, and there is no partial payout for the legs that did win.
How are parlay odds calculated?
The odds of each leg are multiplied together. In decimal odds, two legs at about 1.909 each (American -110) multiply to about 3.645, so a $10 two-leg parlay returns about $36.45 including the stake.
Is a parlay the same as a teaser?
No. A teaser is a type of parlay in which you move each spread or total in your favor for a smaller payout. Both require every leg to win.
Research and entertainment only, not betting advice. 21+ only. Sports betting is not legal in every state. Check your local laws. Problem gambling? Call 1-800-GAMBLER.
