If you’re here looking for an Underdog Sportsbook Missouri promo code, the answer is there isn’t one. Underdog never launched a sportsbook in Missouri, withdrew its application right before the market opened, and then shut down its only U.S. sportsbook a couple weeks later.
Missouri sportsbooks, though? They’re live. Since December 1, 2025, you can place legal online bets in Missouri, just not with Underdog sportsbook.
Last updated: January 30, 2026
Underdog Sports Missouri Promo Code Key Details
| Underdog Sports MO Promo Code | Not available (sportsbook never launched in Missouri) |
| Underdog Sportsbook in Missouri | Not operating |
| Legal Age | 21+ |
| Where you can bet | Must be physically in Missouri |
| Underdog in Missouri today | Fantasy contests only (not a sportsbook) |
What happened with Underdog Sportsbook in Missouri?
Underdog looked like it was setting up shop in Missouri, then pulled out at the last minute. Here’s how we got here:
- September 29, 2025: Underdog announced a market-access partnership with the Kansas City Royals (that’s the standard “entry ticket” sportsbooks use to operate in a state).
- November 26, 2025: Missouri regulators confirmed Underdog withdrew its application just days before launch. Underdog kept its fantasy sports contest license.
- December 2025: Underdog then closed its North Carolina sportsbook (the only state where it was actually taking sportsbook bets).
So if you’re waiting for a Missouri launch promo code to drop, there’s nothing coming. No launch, no code. However, you can check out their pick’em game in Missouri using our Underdog Missouri DFS promo code.
How to Use a Missouri-licensed sportsbook
Missouri’s online sportsbook market is active. Based on Missouri’s first full month of post-launch reporting (December 2025), these mobile sportsbooks are legal in the state:
- bet365
- BetMGM
- Caesars Sportsbook
- Circa Sports
- DraftKings
- Fanatics Sportsbook
- FanDuel
- theScore Bet (PENN)
Promos move fast (sometimes weekly), so the smarter play is to pick the book that fits how you actually bet, and then use whatever the current welcome offer is on that book.
Missouri sportsbook rules
These are the rules you’ll run into in real life:
- You must be 21+ to place a sports bet.
- You must be physically in Missouri to wager (even if you live there, location services still have to confirm you’re in-state).
- No trading on youth/high school events.
- No player props on athletes in games involving Missouri colleges (you can still trade on other college games; the restriction is tied to Missouri schools).
So, is Underdog legal in Missouri at all?
Yes, just not as a sportsbook. Underdog is licensed in Missouri as a fantasy sports contest operator, which is separate from sportsbook licensing. So if what you wanted was the Underdog app (for drafts/contests), that’s the lane they’re still in.
Responsible gaming in Missouri
Missouri requires licensed sportsbooks to follow the state’s responsible gambling framework. Inside this framework, the state offers voluntary self-exclusion, which blocks you from using any licensed operator in the state.
If it stops being fun, call 1-888-BETSOFF for free counseling and information.
Underdog Sports Missouri Promo Code FAQs
What is the Underdog Sportsbook Missouri promo code?
There isn’t one. Underdog Sportsbook never launched in Missouri, so there’s no Missouri sportsbook promo code to claim.
Is Underdog Sportsbook legal in Missouri?
Underdog’s sportsbook isn’t operating in Missouri, so it’s not an option here. Missouri sportsbooks are legal, but you’ll need to use a licensed one.
When did Missouri sportsbook go live?
December 1, 2025.
What sportsbooks are live in Missouri?
Missouri’s December 2025 reporting shows these mobile operators taking bets: bet365, BetMGM, Caesars, Circa, DraftKings, Fanatics, FanDuel, and theScore Bet.
Can I still use Underdog in Missouri?
Yes, for fantasy contests, since Underdog is licensed in Missouri as a fantasy sports contest operator. That’s separate from sportsbooks.
