BetMGM Parlay Betting: Parlay Types, Rules and Odds Calculation

17 min read
Jan 8, 2025, 4:12 PM

Understanding Parlay Betting with BetMGM

A parlay is a wager that combines multiple individual bets into one, where all selections must hit for the bettor to win. This results in bigger payouts than separate individual bets as the combined odds increase both the risk and reward.

At BetMGM Sportsbook, you can create parlays by selecting multiple bets across different sports and events, including moneylines, point spreads, totals, player props, and game props. They also have same-game parlays that combine multiple selections from one event into one wager.

To create a parlay with the sportsbook, you can add multiple selections to your bet slip, and the site will calculate the combined odds and potential payout for you. BetMGM also has parlay boosts and additional promotions available.

This guide will take you through the types of parlay bets available at BetMGM, the rules associated with them, how their odds are calculated, and how to place these bets.

Types of Parlays on BetMGM

Any wager that combines multiple bets can be considered a parlay, but it's worth familiarizing yourself with the subgenres of this bet type.

Traditional Parlays

A traditional parlay is a type of sports bet where you combine multiple individual bets into one bet.

Each of those individual bets are called “legs”. If one of those legs loses, the entire parlay loses.

For example, if you bet on the Denver Broncos to win, the Seattle Seahawks to cover a -6.5 spread, and the total in Kansas City Chiefs vs. Cincinnati Bengals to go over 45.5 total points —all three have to hit for the parlay to pay out.

A traditional parlay doesn't have to feature events from the same day. It could include three futures bets that take months to resolve. In 2022, one BetMGM bettor used a $500 free bonus bet to wager on the Colorado Avalanche to win the Stanley Cup, the Los Angeles Rams to win the Super Bowl, and the Golden State Warriors to win the NBA Finals.

It resulted in a $269,000 win.

Responsible Gambling Tip
Big parlay winners are often heavily publicized because of the size of their wins. Do not be fooled into believing such wins are common. Parlay bets are long shots that are always unlikely to cash.

Same-Game Parlays

A same-game parlay (SGP), or one-game parlay, is a wager on multiple outcomes within a single event.

Unlike traditional parlays, where you bet on multiple games or events, SGPs allow you to bet on one game and make predictions about different parts of the outcome. All legs of the parlay must win for the bet to hit, and the payout is calculated by multiplying the odds of each selection, so the more correct, the more you win.

For example, in an NFL game between the Buffalo Bills and New York Jets, you could create a same-game parlay by betting on Buffalo to win (moneyline), the total score to go over 45.5, and Josh Allen to score a touchdown.

If all three happen, you win the parlay. But if one of them doesn’t, you lose the entire bet.

An important element to navigate with these parlays is the correlation between events. For instance, if the Bills are favored by 6 points in their game against the Jets, you can't back them on the spread and moneyline on two different bets with a same-game parlay. That's because if they cover the spread, they have, by definition, won on the moneyline, so a sportsbook will not give you extra credit for correctly predicting that outcome.

That said, there are bets that you can still combine that may be related. In some cases, a team is highly reliant on one player to produce in order to win. If you feel good about their chances, you might want to bet on that team's moneyline and an over on one of that players props.

In the 2024 NFL regular season, the Houston Texans were 5-0 when C.J. Stroud managed at least 250 passing yards and 5-7 when he didn't. Stroud eclipsing that number didn't magically make them win, but victories were hard to come by when he didn't move the ball through the air. If you thought Stroud was in for a big day, you might want to fold an over on his passing yardage into a same-game parlay that also included the Texans moneyline.

Pre-Packaged Parlays

Pre-packaged parlays can come in a variety of different forms. They can be either traditional parlays that span multiple events or same-game parlays.

What differentiates them is that they have been built by a sportsbook platform like BetMGM, which promotes them on their platform.

The upside of this kind of bet is that it tends to capture a specific theme or broad outcome (i.e., a huge day for the Kansas City Chiefs passing attack) that might appeal to a bettor while saving them some time on research.

The downside is that they, like all parlays, are relatively unlikely to hit. It is also fair to be skeptical about the value of a parlay that a sportsbook is putting together. While betting platforms are more interested in long-term profitability than individual bets, they are not charitable organizations designed to put money in bettors' pockets.

BetMGM Parlay Rules

Below is a summary of some of the rules related to parlays found in BetMGM's house rules:

  • Related Outcomes Prohibited: Parlays cannot include two or more outcomes that are explicitly related or could turn out to be correlated unless placed through a same-game parlay or explicitly marked as a special offering.
  • Outcome Contingencies: BetMGM may void portions of parlays with related contingencies if placed inadvertently.
  • Minimum and Maximum Bets: Parlays must adhere to BetMGM's betting limits, ranging from $0.50 to $10 million.
  • Voids on Errors: If errors occur (e.g., obvious odds errors), BetMGM reserves the right to void or adjust affected parlays.
  • Push Adjustments: If a leg of a parlay results in a push, it is removed, and the parlay continues with adjusted odds.
  • Leg Limits: Parlays are typically capped at a maximum of 15 legs.
  • Promotions: Parlay boosts or promotions may follow additional specific terms.

Parlay Bet Calculations

When using online sportsbooks like BetMGM, you will never be required to calculate the odds of a traditional parlay or same-game parlay wager. This will be done automatically by the platform you are using.

At the same time, it's helpful to know what's going on behind the scenes so you can better understand parlay betting markets.

To calculate parlay odds and payouts, you follow the steps below:

  1. Convert American odds to decimal. For example, +150 (bet $100 to win $150) and -120 (bet $120 to win $100) become 2.50 and 1.83, respectively.
  2. Multiply the decimal odds for all legs. For a moneyline parlay with Green Packers -200: (1.50), Minnesota Vikings -300: (1.33), Cleveland Browns +120: (2.20) the multiplier is 1.50 x 1.33 x 2.20 = 4.39
  3. Multiply the multiplier by the bet to find the payout. A $50 bet is $50 x 4.39 = $219.50

Here's another example that shows how a parlay's payout can grow. 

For simplicity's sake, let's say there are three teams listed as -200 favorites on the moneyline. This is how the payout differs when a bettor puts $10 on different outcomes:

Bet TypePayout
Team A Moneyline$15
Team A + Team B Parlay$22.50
Team A+ Team B + Team C Parlay$33.75

Parlay Insurance and Boosts

Before you start placing your own parlay bets at BetMGM or any other sportsbook, there are a couple of types of promotions you should understand and keep an eye out for.

Parlay Insurance

Parlay insurance is a promotion that refunds a part of your bet if one leg of a parlay loses.

This safety net gives you a chance to get some of your losses back, usually in the form of free bets, as long as your parlay meets the requirements, like a minimum number of legs.

Sometimes, this promotion type is as simple as covering you for any leg of your parlay, but it may be applied to only hyper-specific outcomes like an overtime goal in hockey or a football team losing at the last minute. Be sure to have a good handle on the terms and conditions of any parlay insurance promotion you encounter.

Parlay Boosts

Parlay boosts increase the payout of a parlay by increasing the odds.

The boost is usually for parlays with a certain number of legs or more, increasing the reward on an already-risky bet. These promotions work like any other kind of odds boost, but they arguably are less useful for bettors because parlays already tend to offer excellent payouts, with their greatest weakness being their low probability of winning.

Placing a Parlay Bet on BetMGM

BetMGM makes it straightforward for new bettors to wager on parlays. 

The registration process is designed to take minutes, allowing bettors to access various markets quickly.

Here's a step-by-step guide to help new bettors create an account on BetMGM and start building parlays. 

1. Visit BetMGM:

  • Access the BetMGM Sportsbook website or app to view the latest odds.
  • Ensure you're located in a state where BetMGM is legally authorized to operate. BetMGM is located in 28 states (retail and online) and Washington, D.C. Bettors must be 21 and above in all regions except D.C., where the gambling age is 18.

2. Sign Up:

  • To confirm your account, click on the gold "Sign Up" button and provide personal details, including name, date of birth, and email address.
  • BetMGM ensures compliance by requiring bettors to share the last four digits of their Social Security Number (SSN) and activate geolocation services.

3. Make Your First Deposit:

  • Choose from payment methods like PayPal or bank transfers to fund your account.
  • Set deposit limits to practice responsible gambling as you explore NBA betting odds.

4. Claim The BetMGM First Bet Offer:

  • BetMGM gives new bettors a first bet offer based on current odds for many games and betting markets.
  • Before using the promotion, read the review and the terms carefully, such as wagering requirements and expiration dates.

5. Explore the Betting Markets:

  • Now it's time to navigate to the bets that appeal to you the most and click on the odds. If you click on multiple bets, they will automatically form a parlay. Keep an eye out for packaged parlay options that suit your preferences.

Most Reviewed Sportsbooks with Parlay Options

FanDuel Sportsbook
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  • Extensive list of Same Game Parlay's
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DraftKings Sportsbook
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BetMGM Sportsbook
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ESPN Bet Sportsbook
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AZ
CO
IL
IA
KS
KY
LA
MD
MI
NJ
OH
PA
TN
VA
WV
MA
NC
USD
CAD
VISA
Mastercard
Trustly
ACH/eCHECK
PayPal
Skrill
Venmo
Cash at Cage
Bank Wire Transfer
ApplePay
Debit Cards
Go to Website
Details

Parlay Betting Strategies

If you're looking to make some parlay bets, you can use a variety of strategies. Here are a couple worth considering.

Target High-Scoring Games for SGPs

In most cases, there are far more props related to offensive performance than defensive performance. For instance, there are often prop markets for MLB players hitting home runs but failing to hit home runs or NFL players scoring touchdowns but failing to reach the end zone.

It's not impossible to build a parlay around low-scoring games, but you have more choices when you find a game that's expected to be action-packed. Looking at over/under totals can give you a sense of which games are expected to have more offence included in them.

An example of a matchup to target might be the AFC North Divisional rivalry between the Baltimore Ravens and Cincinnati Bengals. The last five times the teams have met, the score has been extremely high.

Last 5 Bengals vs. Ravens Games

Layer Heavy Favorites

One of the ways to mitigate the risk inherent in parlays is to include exclusively outcomes that are considered highly likely to happen. This is not guaranteed to work by any stretch of the imagination, but it moderates the risk profile of this bet type.

If you combined three markets with -350 odds (which come with an implied probability of 77.78%), you wind up with a parlay at +112, odds that closely resemble a single straight bet you would consider a slight long shot.

Limit Your Selections

This is a responsible gambling note as much as strategy advice, but try to limit the legs in your parlays. It may seem tempting to ratchet up the payout with additional legs, but each makes it even less likely your wager will be successful.

Hedge Your Bets

If you find yourself down to the last game of your sizeable parlay, you can hedge the last leg to lock in a profit.

For example, if you stand to win $1,000 on your five-leg parlay and your last pick is a moneyline bet on the New York Yankees, you can bet $500 on the Toronto Blue Jays to win. The payout ends up looking like this.

BetStakeTo Win
5-Leg Parlay$100$1000
Blue Jays Moneyline$500$1000

In this simplified scenario, whatever the outcome of the Yankee-Blue Jays game is, you will have bet $600 and won $1,000.

It's important to note that you only find yourself in a situation like this by hitting the vast majority of a long-shot parlay.

Betting on Parlays Responsibly

The most important thing to know about parlays is that sportsbooks want you to make them. They are sometimes jokingly referred to as donations due to the difficulty of having multiple outcomes aligned at the same time.

With that in mind, the best thing to do from a responsible gambling standpoint is probably to avoid them altogether. If you do bet parlays, ensure that you do some with the understanding they are purely a form of entertainment.

Finding long-term profitability in sports betting is always difficult, and it's particularly hard if you favor parlays. Below is a summary of some broader responsible gambling principles that are always worth remembering:

Tip

Description

Set a Budget and Stick to ItDecide what you can afford to lose before betting, and never go over that. It's a good idea to keep that budget between 1-5% of your disposable income.
Use Tools for Self ControlSportsbooks offer tools like deposit limits, time-out options, and self-exclusion programs to help you manage your betting. Use these features to set boundaries and be responsible.
Don’t Chase LossesIf you’re on a losing run, don’t bet more, hoping to get your losses back. Chasing losses leads to reckless decisions and more losses and creates a cycle that’s hard to get out of.
Take Breaks and Monitor Your BehaviourTake regular breaks from betting. Make sure it doesn’t consume your time or thoughts. Monitoring your behavior will help you stay in control and recognize any unhealthy habits before they become a problem.

FAQ

Parlay Basics

What is a Parlay Bet?

A parlay combines multiple bets into a single wager where all selections must win for a payout. This format increases potential returns but also adds risk, as one losing leg results in losing the entire bet.

Same-Game Parlays

What Makes Same-Game Parlays Unique?

Same-game parlays allow multiple bets within a single event, such as a team's moneyline and a player’s performance. This flexibility enables bettors to target outcomes with potential correlations for higher payouts.

Odds Calculation

How Are Parlay Odds Calculated?

Parlay odds are determined by multiplying the decimal odds of each leg together. The result is converted back to American odds to display the payout.

Hedging

Can You Hedge a Parlay Bet?

Yes, you can place an opposing bet on the final leg to secure a profit regardless of the outcome. Hedging requires careful planning and analysis of potential returns and risks.

BetMGM Features

How Does BetMGM Enhance Parlay Betting?

BetMGM offers features like parlay boosts, which increase the odds and potential payouts of a bet. They also provide parlay insurance, refunding a portion of your wager if one leg fails, subject to terms and conditions.

References

Sources
Washington Post
Parlays are big business for sportsbooks — and big trouble for bettors
https://www.washingtonpost.com/sports/2022/08/31/sports-betting-parlay-odds/
Barrons
DraftKings and Other Sports Gambling Apps Are Hitting the Jackpot With ‘Parlay’ Bets. As They Win, You Lose.
https://www.barrons.com/articles/draftkings-flutter-stock-sports-gambling-parlay-bet-25914b0f
<p>Nick has been fascinated with sports since he was first taken to a Toronto Maple Leafs game in 1998, and he's been writing about them professionally since 2014.</p><p>Nick has covered baseball and hockey for outlets like The Athletic, Sportsnet, and Yahoo Sports while growing his expertise in sports data analysis and research.&nbsp;</p><p>Between 2022 and 2023, he worked for a betting startup called NorthStar Bets. In 2024, he contributed to Oddspedia before joining the RG team.</p>
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