Underdog may be best known for its fantasy pick’em contests, but it has recently entered the prediction markets arena. In partnership with Crypto.com, Underdog Predict is now available within the larger Underdog fantasy app in dozens of states. Players can trade event contracts on sports outcomes.

Signing up for Underdog is very simple. Here are the steps we followed to create an account, claim the bonus, and start trading on prediction markets.

Get the app or visit the Underdog website to get started.

Allow location to confirm you're not in a restricted state, then select “Sign Up.”

Enter your email, create a password and username, and click “Create Account.”

Provide your phone number and date of birth. Enter the code sent to you to confirm your number.

Double-check the info you provided, then verify your identity to complete your account.

Make your first deposit to start buying contracts with Underdog Predict.

Cole Rush
Sweepstakes Casino Expert
12+ articles written for Casino.us
You may see two Underdog promotions floating around. One is a play $5, get $75 offer, and the other is a 50% deposit match up to $1,000. In my research, the Underdog customer support team told me these bonuses cannot be applied to prediction markets and only to fantasy contests.
Currently, Underdog doesn’t list any prediction-specific promotions, which is disappointing compared to Kalshi, who have a wide range of promotions. Most of its promotional efforts seem focused on the fantasy experience. However, there is a special perk you can enjoy with Underdog Predict and fantasy.
Underdog Predict is still pretty new. We’ll keep an eye out for prediction-specific promotions in the app and update you with the latest info.
Underdog’s prediction markets are branded “Underdog Predict” within the larger app. They allow you to buy and sell contracts tied to specific outcomes. Here are the key tenets of how it all works.

Cole Rush
Sweepstakes Casino Expert
12+ articles written for Casino.us
Underdog functions more like a financial exchange than a casino, with trading and contracts instead of bets. Prices can fluctuate, and the opportunity to sell contracts adds some new dynamics into the mix.
Underdog is staying true to its roots and sticking to sports markets with its prediction platforms. As such, the markets you’ll find at Underdog Predict are sports-heavy. Here are the main types you’ll see. Notice that they are similar in name for sports bets, but they still function as prediction markets.
Underdog Predict currently offers markets for NFL, NBA, NHL, MLB, CFB, soccer, and tennis, with plans to add more leagues and sports in the future.
Additionally, two states have separate options. In Idaho and Maine, Underdog is a prediction market only (no fantasy pick ‘em), and it offers:
Underdog is offered as a comprehensive app that includes Fantasy pick’em and Predict, where available. The inherent benefit here is that Underdog Predict is nestled within an existing app ecosystem with many polished design choices. The app has rave reviews (an average of 4.8/5 on the App Store) with plenty of praise for its user experience and one-stop-shop nature. This is considerably better than FanDuel, which only has a 3.0 rating.
Some of the Underdog app's headline features include live pricing updates, push notifications for your markets, and quick deposits and withdrawals. That said, prediction market users who want a single, dedicated app without any extra options may find Underdog’s app to be a bit crowded.
What We Like
Nested in the existing Underdog Sports app for easy access
Clean and user-friendly layout for easy browsing
Pricing and data update live, so you can track your event contracts easily
Deposits and withdrawals are simpler and faster on the app than on ProphetX
What We Don’t Like
The welcome bonus only applies to sports picks, not prediction markets
Some users may not like that Underdog Predict is a section within the larger app
No promos or bonuses are available specifically for prediction markets
Prediction markets have come under legal scrutiny lately, so their future remains uncertain. However, CFTC-approved exchanges are permitted under federal law. The point of contention comes from various states that say sports-related outcomes (which Underdog Predict offers in spades) constitute illegal betting. Prediction market operators disagree, but those battles are ongoing.
For now, Underdog Predict is legal in a handful of states, while the following states restrict it: AZ, AR, CT, IL, LA, MD, MA, MI, NV, OH, NJ, and PA. If you live in a restricted state, you won’t even see the Underdog Predict option in your app.
Two different cases are Idaho and Maine, which allow prediction markets but prohibit fantasy sports. You can access Underdog Predict from those states.
Underdog is a great choice for new prediction market fans, especially if you already enjoy the site’s fantasy offerings. However, it’s far from the only option available. You can find many alternative options on the market that offer far more than just sports outcomes, and Polymarket, which offers an actual welcome bonus that Underdog doesn’t.
Underdog offers a standard number of payment methods. Debit cards and online banking via Trustly are available, but Apple Pay is only available with a connected debit card. Credit cards cannot be used to deposit for Underdog Predict, so Apple Pay effectively works like a debit card.
One odd note: the minimum withdrawal is $10, but there’s a catch. If your balance is below $10, you can withdraw the remaining amount.

Cole Rush
Sweepstakes Casino Expert
12+ articles written for Casino.us
These methods align with what I’ve seen at other prediction market sites. Venmo and PayPal tend not to be offered, so those aren’t a big miss here. The only option I'd like to see is a wire transfer, since Polymarket offers that method. Even so, it’s another one I’m happy to leave off the list because it usually comes with super high minimum deposits and withdrawals.
Underdog Predict doesn’t have a welcome bonus; however, you can bet $5 and get a $75 bonus for fantasy contests only with 1x wagering. You should still note a few high-level terms for Underdog as a broader platform.
Underdog has two customer service channels: live chat and email. Live chat opens with an AI chatbot. We don’t say this often, but the chatbot was genuinely helpful and had amazing responses to our questions. We chatted with it to confirm many details, and it was always clear, concise, and detailed in its responses. It provided information on withdrawal minimums, processing times, and platform availability.
As soon as you feel like the bot doesn’t have anything else to help you with, you can chat with a human. We were connected immediately and received a response in 2 minutes.
Finally, a note of appreciation for the Underdog FAQ. It is short and sweet, but it covers all the main things a new player might ask, including how contract pricing works, which payment methods are allowed, and where the product is available.
Underdog Predict is a solid platform overall, but it completely lacks a welcome bonus. This already puts it on the back foot compared to brands like Kalshi or Polymarket, which both provide incentives for new users.
Still, there are plenty of reasons to recommend Underdog Predict. First, it’s already embedded in the Underdog Sports app, which is primarily geared toward fantasy pick’em players. If you’re invested in that platform, Predict will slot neatly into your existing routine. Second, the app is super streamlined and user-friendly. Third, Underdog Predict offers more markets than some competitors, like Polymarket.
So even if you’re disappointed in the lack of a welcome bonus, you can still find plenty to enjoy about Underdog Predict.
Underdog Predict currently doesn’t have a promo code or welcome bonus. There’s no specific welcome bonus for prediction bets, but you can claim an Underdog welcome bonus, which can only be used for fantasy pick’em contests.
Right now, there’s no bonus to claim at Underdog Predict. You can sign up for the bet $5, get $75 bonus credits, but these cannot be used on prediction markets.
Underdog Predict currently has markets for NFL, NBA, NHL, MLB, CFB, soccer, and tennis. The site plans to add more in the future.
Yes. Underdog Predict is offered in partnership with Crypto.com as an official exchange. It is offered in numerous states, though some prohibit it.
You can buy event contracts from within the Underdog Sports app, as long as you’re in an authorized market. Find the market you want to buy a contract for, choose how many contracts you’ll buy, and complete the purchase. From there, you just have to wait for the outcome to see if you were correct.