Underdog Predict review 2026: Trade sports event contracts through the Underdog platform

Written by Paul Portanier

Checked by Alexandra M.

Underdog Predict is a prediction market platform integrated into the Underdog Fantasy ecosystem that allows users to trade contracts tied to sports outcomes. Rather than placing traditional bets against a sportsbook, traders buy and sell event contracts whose prices reflect the market’s estimated probability of a particular outcome happening.

In this review, I’ll break down how Underdog Predict works, what types of markets it offers, and whether the platform is safe to use.

Underdog Predict key takeaways

Available through Underdog Fantasy app and website

Available in 32 US states

Markets across 10+ sports including NFL, NBA, MLB, and NHL

Minimum deposit $10

Powered by Crypto.com Derivatives North America (CFTC-regulated)

What is Underdog Predict, and how does it work

Underdog Predict is a prediction market platform integrated into the Underdog Fantasy app. Rather than placing traditional sportsbook bets against the house, users trade event contracts with prices that reflect the market’s estimate of how likely an outcome is to occur. The contracts themselves are offered through CDNA, a derivatives exchange regulated by the US Commodity Futures Trading Commission.

Contracts on Underdog Predict trade between $0.01 and $0.99, depending on how likely the market believes the outcome is. If the prediction is right, the contract settles at $1. If the prediction is wrong, the contract settles at $0, meaning the trader loses the amount spent to buy the position.

Once a trader buys a contract, they can hold it until the event resolves or sell it before settlement if the market price changes. If the contract price rises after purchase, selling early can lock in profit. If the price drops, traders can exit the position to limit losses. 

Underdog Predict is currently available in 32 US states and Washington DC. It’s currently unavailable in the following states: Arizona, Colorado, Connecticut, Delaware, Illinois, Iowa, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Nevada, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, and Tennessee.

Underdog Predict app review

Underdog Predict can be accessed through the Underdog Fantasy mobile app on iOS and Android. Prediction markets are integrated directly into the existing Underdog platform rather than being a separate application.

The interface follows the same structure as the Underdog Fantasy product, where users browse sports leagues and upcoming games to find available markets. Prediction contracts appear alongside events already listed in the app, making them easy to locate for users familiar with the Underdog app.

Navigation is centered around sports categories and matchups, allowing users to move between leagues and events quickly. The platform focuses on simple market selection and quick trade confirmation, keeping it accessible for sports fans who may be new to prediction markets.

Time2play Expert Analysis

App rating: 88/100

Finding contracts in the app is super easy because everything is tied to sports events. I just clicked into an NBA game, and the contracts were right there, so you don’t have to hunt through categories or scroll through a giant market list like on some prediction exchanges.

The pricing is also very clear. You see the contract price and the probability immediately, which makes it easy to understand what you’re buying, and I never felt confused about what a position would cost or what the payout might look like.

Placing trades is fast. With just a couple of taps, you confirm the number of contracts, and you’re done. The whole process feels closer to entering a fantasy contest than placing a trade on a financial exchange.

Compared to platforms like Kalshi, the interface is much simpler. Kalshi feels like a real trading terminal with deeper market data and tools. Underdog Predict doesn’t really try to compete on that level. It’s built more for sports fans who just want to trade outcomes.

Paul Portanier

Different prediction markets available at Underdog Predict

Underdog Predict has contracts across several major sports, including NFL, NBA, MLB, NHL, college football, college basketball, soccer, and tennis. Markets are usually attached to specific games or tournaments, so users can browse contracts within individual events.

The most common markets include game winner contracts, where traders predict the outcome of a specific matchup. The platform also offers markets tied to playoff advancement and championship winners. Some season-long predictions may also appear, such as award winners or major milestones across a league season.

Overall, Underdog Predict remains heavily focused on sports contracts, and that narrower focus makes it easier to navigate for sports fans, but it also means the overall market catalog is smaller than some competing prediction platforms.

Time2play Expert Analysis

Market variety rating: 68/100

Browsing the markets on Underdog Predict, you notice the pattern pretty quickly: everything revolves around sports. I moved between NBA games, then NFL, and some NHL contracts.

So if you mainly want to trade sports outcomes, that works well. You can open an upcoming NBA game and immediately see contracts tied to the winner or other outcomes. In that sense, the experience feels somewhat similar to browsing a traditional sportsbook like DraftKings, where markets are also organized around individual games.

The difference shows up in the depth of those markets. A sportsbook like DraftKings might offer hundreds of betting options for a single game, like spreads, totals, player props, and more, while Underdog Predict typically focuses on just a few contract outcomes per event. 

Once you’ve browsed a few sports categories here, you’ve basically seen the whole system. Compared to exchanges like Polymarket, the difference is big, as those spread across politics, economics, global events, and even weather markets. Underdog doesn’t try to compete on that level of variety, but the lack of other markets still keeps it below the top tier for market variety.

Paul Portanier

How to trade on Underdog Predict

Underdog Predict markets display outcomes as contracts priced between $0.01 and $0.99, reflecting how likely traders believe an event is to happen. The higher the price, the more confident the market is that the outcome will occur. If the event resolves in your favor, each contract settles at $1.

For example, you buy 50 contracts predicting a team will win at $0.35 each, spending $17.50 before fees. If the prediction is correct and the contract settles at $1, the total payout would be $50, producing a profit of $32.50.

You can also sell contracts before the event resolves. If the contract price rises after purchase, the position can be closed early to lock in profit, and if the market moves against the prediction, selling the contracts allows you to exit the position and limit losses.

Trades are executed at the current market price when users buy contracts. Some prediction exchanges allow traders to set custom prices using limit orders, but Underdog Predict focuses on a simpler trading process designed for quick purchases.

KYC verification: Why Underdog requires identity verification

Before you can trade contracts on Underdog Predict, you must complete a Know Your Customer (KYC) verification process when creating your account. You need to submit your name, address, phone number, date of birth, and Social Security Number. The platform may also verify identity through third-party identity verification services or credit bureau checks before allowing trading.

The contracts traded on Underdog Predict are offered through Crypto.com Derivatives North America, a derivatives exchange regulated by the US Commodity Futures Trading Commission. To comply with financial regulations, the platform must confirm the identity and eligibility of every trader, prevent fraud, and ensure users are located in supported jurisdictions.

Time2play Expert Analysis

The first thing I noticed when trading on Underdog Predict is how simple the process is. You open a market, look at the contract price, and decide how many contracts you want. That’s basically it.
What stood out to me is that the platform doesn’t really behave like a traditional exchange. There’s no way to set a custom price and wait for someone to match it. Every trade happens at the price currently listed in the market. 

At first, I missed the flexibility you get on platforms like Kalshi where you have order limits, but after a few trades, I got why they did it. The system feels closer to placing a quick prediction rather than managing a full trading position.

Where the platform works best is for users who already follow sports closely. I can jump into an NBA game, buy a few contracts on a team, and track how contract prices move leading up to the event. It’s quick and easy. The downside is that experienced traders might feel a bit restricted since there aren’t many tools for adjusting strategy or setting precise entry prices.

Paul Portanier

Underdog Predict payment methods

Underdog Predict allows users to fund their account using debit cards, Apple Pay, or online bank transfers through Trustly. Deposits are processed instantly, allowing users to begin trading contracts right after confirming the transaction. The minimum deposit is $10, and Underdog doesn’t charge any deposit fees.

Withdrawal requests are processed through Trustly or debit card payouts, depending on the deposit method used, but they need to go through a 48–72 hour security review period before approval. After approval, funds are delivered within 1–5 business days, depending on the payment provider. Underdog doesn’t charge any withdrawal fees either.

All payment activity is tied to account verification and regulatory compliance checks. Users must complete identity verification before withdrawals can be processed, and the platform may collect additional financial information, like employment status, annual income, net worth, and investment experience.

Certain states also impose regulated deposit limits on Underdog accounts. For example:

• Massachusetts: $1,000 per 31 days
• Maryland: $5,000 per 31 days
• Tennessee: $2,500 per 31 days

These limits apply regardless of the user’s own deposit settings unless additional verification is provided.

Time2play Expert Analysis

Payments rating: 72/100

When I went to deposit funds, the process felt pretty straightforward. I used a debit card first, and the money showed up instantly. I would’ve preferred a $5 minimum deposit, but $10 was still manageable to test the platform without committing much money upfront.

The payment options themselves are decent but not huge. They do the job, but compared to larger prediction exchanges, you notice the smaller selection right away. 

Withdrawals were the only place where I felt the process slow down. The 48–72 hour review window before the withdrawal even gets processed feels long, and then the transfer time depends on the payment provider. So realistically, you’re looking at at least 3 business days before the funds land in your account, which is why this section lands around the low-70s for me.

Paul Portanier

Underdog Predict fees and payouts

Underdog Predict contracts settle at $1 for every correct prediction, regardless of how much the contract originally cost. That means the cheaper you buy a contract, the larger your potential profit becomes if the prediction resolves in your favor. Payouts for winning contracts are typically credited within 24 hours after the event settles.

The main cost on the platform is a fixed fee of $0.02 per contract when entering a trade. For example, buying 5 contracts would add $0.10 in trading fees to the order. If the prediction is correct, each contract pays out $1, and your profit is simply the difference between the price you paid for the contracts and the $1 payout, minus the trading fees.

Compared to traditional sportsbooks, this structure can often be cheaper. Sportsbooks usually build a 4–5% vig into standard betting markets, while Underdog’s $0.02 contract fee usually represents a much smaller percentage of the trade. Because contracts can also be sold before the event resolves, traders can lock in profits or limit losses as market prices move.

Time2play Expert Analysis

Fees rating: 88/100

The fee structure on Underdog Predict is pretty easy to understand. Each contract carries a $0.02 fee, and the platform shows the total cost before you confirm the trade. I liked that because I never had to guess what a position would cost.

Where things get a bit trickier is how the fee interacts with the contract price. Since contracts trade between $0.01 and $0.99, part of your cost is the contract itself, and part is the fee. Compared to a sportsbook’s 4–5% vig, the total cost can still be much lower if you’re buying contracts at good prices.

Compared with other prediction markets, Underdog sits somewhere in the middle. Kalshi’s fees are usually similar or slightly lower, while Polymarket has no platform fee but relies on crypto network fees. Personally, I enjoy the simplicity of Underdog. I can see the price, see the fee, confirm the trade, and move on.

Paul Portanier

Is Underdog Predict safe?

Underdog Predict operates within the US derivatives regulatory framework. Event contracts available on the platform are traded through Crypto.com Derivatives North America (CDNA), a CFTC-regulated derivatives exchange. This means the platform must follow federal rules related to market integrity, financial reporting, and anti-fraud protections.

To access trading features, users must complete KYC verification, which requires submitting personal information such as name, address, phone number, date of birth, and Social Security Number. These checks help confirm identity, prevent fraud, and ensure users are located in approved jurisdictions.

The site uses 256-bit SSL encryption, and users can also enable two-factor authentication (2FA) to add a layer of account protection beyond a password.

Underdog also provides responsible gaming tools to help users manage their activity. These include deposit limits, cool-off periods, and self-exclusion options that allow users to restrict account access. The platform also links to support resources such as the National Council on Problem Gambling (NCPG) and state-specific helplines.

Time2play Expert Analysis

Safety rating: 93/100

Underdog Predict checks most of the important boxes when it comes to security. The contracts themselves run through CDNA, which immediately puts it in the same regulatory category as Kalshi, and that level of oversight goes a long way toward making me feel safe using the platform.

Account verification is also strict. I had to provide my name, address, phone number, date of birth, and Social Security Number before I could trade. It’s definitely more friction than crypto-based platforms like Polymarket, but that’s also the point, as it helps prevent fraud and keeps the platform compliant with financial regulations.

Where Underdog still feels a little light is in its user protection tools. It offers the basics like deposit limits, cool-off periods, and self-exclusion options, but they’re fairly simple compared to what some sportsbooks offer. Still, when you combine those tools with federal oversight and strong identity verification, the overall safety setup is solid.

Paul Portanier

Underdog Predict comparisons

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