Underdog Missouri Promo Code: Potential Welcome Offer & Bonus

Written by

Brad Szalach

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Missouri sports betting will debut on December 1, 2025. With it, Underdog Sportsbook, having secured market access through the Kansas City Royals, will be among the first operators to accept sports wagers within the state.

Underdog, alongside Bet365, Caesars, BetMGM, Fanatics, Kambi, PENN Entertainment, and FanDuel, received temporary licenses on October 22, 2025. This allows them to test systems and equipment, as well as tailor promotions, as they prepare to launch at midnight on December 1. The eight operators join DraftKings and Circa Sports, who received the state’s untethered sports betting licenses back in August.

Established in 2020 by Brandon Stakenborg, Trevor John, and Jeremy Levine, Brooklyn-based Underdog Sports already has a strong presence in Missouri through its DFS offering. The Show-Me State will mark the operator’s second real-money sportsbook launch following its debut in North Carolina. However, its Underdog Fantasy product is live in 40 U.S. states, including Missouri.

On this page, we’ll cover all the need-to-know details about Underdog Sports Missouri, including its expected bonuses and likely sports betting markets. We’ll also cover the latest Underdog Sportsbook Missouri breaking news as soon as we get it, so read on to stay up to date.

Underdog Missouri promo code: Bonus & offer coming soon

Despite its temporary license, Underdog Sports is not yet live in Missouri and won’t begin accepting sports wagers until after 12 a.m. ET on December 1. However, once it launches as one of the day-one operators, we expect it to offer the same bonus and sportsbook promo as its North Carolina site.
If our projections are correct, new players could claim a 100% match bonus up to $1,000 on their first deposit. The bonus funds and deposit amount will each carry a simple 1x playthrough requirement, which players must satisfy within 14 days after receiving the bonus funds.

Besides the welcome bonus, Underdog Sportsbook MO is also likely to offer a variety of existing-player promotions. These may include profit boosts, bet-and-get offers, bonus bets, and No Sweat bonuses, among others. Note that these are educated projections, as Underdog Sports MO has not yet confirmed any bonuses or promotions ahead of its December 1 launch. We will keep you informed of any updates as soon as we receive them.

Current status of sports betting in Missouri

While the Show-Me State can now claim to be among the U.S. states where sports betting is legal, the official market launch has yet to take place. Passed in November 2024 by a slim majority (50.7%), Missouri Amendment 2 allows residents aged 21 or older to place sports wagers at licensed sportsbooks. The state’s regulatory framework permits the Missouri Gaming Commission (MGC) to issue up to 14 online and 19 retail sports betting licenses.

Alongside DraftKings, Underdog Sports was among the first operators to file for an MO “untethered” sports betting license on June 11, 2025. However, when the MGC granted DraftKings and Circa Sports the standalone licenses in August, Underdog was required to secure a tethered partnership with a local pro sports team or casino.

On September 29, 2025, the operator announced a multi-year market access partnership with MLB’s Kansas City Royals. It later announced a multi-year marketing partnership with the St. Louis Blues on October 14, 2025, allowing Underdog to use the Blues’ IP in marketing materials, campaigns, in-person activations, and on-site sign-up bonuses at the Enterprise Center.

Underdog Sports has now been awarded one of eight temporary sports betting licenses in Missouri to test systems and finalize preparations ahead of the December 1 launch.

Latest Underdog Missouri news

Underdog has legally operated its daily fantasy sports products in Missouri since 2021, after acquiring its Fantasy Sports Contest Operator license. Following the launch of its sportsbook in North Carolina in March 2024, the operator has been vocal about “aggressively pursuing” sportsbook expansion opportunities. Missouri presents an ideal market, given its strong sports fanbase and newly legalized betting framework.

Despite only holding a temporary license, we expect the Underdog Sportsbook app MO to go live on opening day as part of the first wave of 10 operators. This, however, will depend on MGC approval of its house rules and internal controls. Based on its proven fantasy sports presence and strong North Carolina sportsbook offering, Underdog appears well-positioned to establish a solid foothold in Missouri.

How do I sign up for Underdog in Missouri?

The first day of Missouri sports betting is set for December 1. However, the MGC has announced that sports betting apps can begin pre-registrations and accepting deposits on November 17, 2025, two weeks before launch. If you’re ready to get a head start with Underdog Missouri, follow these steps to sign up and make your first deposit to ensure you’re ready to claim the Underdog Missouri promo code:

  1. Click one of our Underdog promo code links on this page.
  2. Tap “Download App,” then scan the QR code to download the Underdog Sportsbook app via Google Play or the App Store.
  3. Tap “Install” or “Get” to confirm the free download and install it on your mobile device.
  4. Open the app and press “Sign Up.”
  5. Fill in your registration details, including email address, birth date, username, and password. You may leave the “Promo Code (Optional)” field blank, as our link automatically qualifies you for the Underdog MO sign-up bonus.

Underdog should verify and activate your account automatically, at which point you can make your first deposit.

The Underdog registration process is simple and takes only a few minutes. If you already have an Underdog Fantasy MO verified account, you likely will not need to register again to access the sportsbook.

Underdog MO app – Will it be different?

Good news for bettors who have used the Underdog Fantasy app in Missouri: the Underdog Sports app will likely be nearly identical, with only surface-level changes. Expect localized promotions, odds boosts for Missouri teams, and enhanced bet boosts for Missouri colleges.

The Underdog Fantasy app in Missouri is widely regarded as one of the best in the industry, with a 4.7 rating on Google Play and 4.8 on the App Store. The app is known for its sleek interface, simple bet slip builder, flexible parlays, and wide selection of betting markets.

The Underdog Sports app available in North Carolina mirrors this experience, offering fast performance, clean navigation, a broad range of betting markets, competitive odds, live wagering, streaming, and same-game parlays.

We expect the Underdog MO app to offer the same feature-rich experience that has made it popular across 40 U.S. states. Games featuring Missouri teams should be highlighted prominently, along with MO-specific bonuses.

Different types of wagers you will be able to make

Missouri sports betting will go live on December 1, just in time for the NFL Playoffs and the lead-up to Super Bowl LX. As a result, Underdog’s MO app is expected to feature a full range of wager types, including:

Moneylines

One of the simplest forms of sports betting, moneylines involve picking the winner of a match. Odds reflect which team is favored and which is the underdog:

A $200 bet on the favored Chiefs returns $100 profit if successful. A $100 bet on the Broncos returns $165 if they win. If the game ends in a tie, most sportsbooks refund the stake.

Spreads

Spread betting levels the playing field by giving underdogs “phantom points” and assigning a handicap to favorites:

The Colts must win or lose by four or fewer points to cover the spread. The Chiefs must win by five or more.

Totals

Also known as over/under bets, totals involve predicting whether the combined score will be over or under the posted number:

A combined score of 40 would cash the under, while 44 or more wins the over.

Parlays

Parlays combine multiple selections into one wager for a higher payout. All legs must hit to win.

Same-game parlays

SGPs allow you to combine multiple bets from the same game in one slip, such as:

Player props

Player props focus on individual performance, such as Travis Kelce anytime touchdown or Patrick Mahomes over 2.5 passing touchdowns.

Missouri allows college player props, unlike many states.

Missouri teams and games to target with promos

The Show-Me State is home to six major professional sports teams across Kansas City and St. Louis:

Missouri also supports a strong college sports scene, including the Missouri Tigers, Missouri State Bears, and Kansas City Roos.

With Underdog Sports launching on December 1, bettors will have access to major local and national events, including the upcoming Chiefs vs. Texans home game at Arrowhead Stadium on December 7, 2025.

Underdog Missouri FAQ

What payment options can I use to fund my Underdog Sportsbook account?

Players can deposit using debit/credit cards like Mastercard and Visa, and e-wallets such as PayPal and Trustly.

Does Underdog Sports have good customer support?

Yes. Players can contact Underdog MO via email at support@underdogfantasy.com, an on-site contact form, or social media channels, including Facebook, Instagram, LinkedIn, and X. Response times are usually 24–48 hours.

How fast does Underdog pay withdrawals?

Withdrawals at Underdog and other MO sportsbooks will likely take 24–48 hours, depending on the payment method. Some methods may be faster or slower.

Are online casinos legal in Missouri?

No. Amendment 2 does not include provisions for online casino gaming. However, Missouri offers more than 13 retail casinos for in-person gaming.