4.0 / 5
ATS Score
4.0 / 5
ATS Score
Updated September 22, 2026
Editorial Review By: Mike McDermottSenior Betting & Casino Analyst
Underdog is a legitimate fantasy sports platform with one of the strongest Best Ball products in the U.S., a clean mobile app and a growing range of Pick'em and prediction-style products. Its biggest drawback is that the experience can vary significantly by state, so the games available to one user may not be available to another.
Choose a Game Type
Select from available formats such as Pick'em, Best Ball, Battle Royale, or other fantasy contests offered in your state.
Build Your Entry
Make player-stat selections in Pick'em or draft a roster in Best Ball and other draft-based contests.
Review the Cost & Payout
Check the entry fee, potential payout, scoring rules, and any promotional terms before submitting.
Follow the Results
Your entry is graded based on player performance. In Best Ball, Underdog automatically uses your highest-scoring eligible lineup.
Collect Your Winnings
Eligible winnings are added to your withdrawable balance after the contest is settled. Withdrawal options and verification requirements may vary by account.
Underdog Fantasy is a real-money fantasy sports platform best known for Best Ball drafts and Pick’em contests. The platform has expanded considerably beyond its original draft-focused product and now also offers Prediction Picks, a separate event-contract product, in eligible states.
The most important thing to understand is that Underdog does not offer the same experience everywhere. Drafts, Pick’em and Prediction Picks each have their own state availability, and even Pick’em can operate differently depending on your location.
For fantasy users, Underdog remains particularly strong for players who enjoy drafting but do not want the weekly lineup management of a traditional season-long league. Best Ball automatically selects your highest-scoring eligible lineup, while Pick’em is built around player-stat projections.
Prediction Picks work differently and should not be confused with fantasy contests. They are event contracts tied to real-world outcomes and are offered through regulated exchanges.
Underdog’s game selection is broader than it was when the platform first launched. Its core fantasy products include Best Ball, shorter draft contests and Pick’em, while Prediction Picks provide a separate way to trade event contracts inside the Underdog ecosystem.
Best Ball remains one of Underdog’s signature products.
Users draft a roster through a snake draft, but there are no weekly start/sit decisions, waivers or trades during the contest period. Underdog automatically selects the highest-scoring eligible players at each position to form your scoring lineup.
Contest structure varies. Entry fees, roster sizes, prize pools, number of entrants and scoring rules are displayed before entering each contest.
This format is particularly appealing to fantasy football users who enjoy drafting but do not want to manage a roster throughout the season.
Battle Royale is a shorter draft-based format.
Users draft players through a snake draft for a shorter contest period, often a single day or week. Instead of competing only against the other users in your individual draft room, your score can be compared with the wider contest field.
It offers much of the drafting experience of Best Ball without requiring a full-season commitment.
Underdog Pick’em is based around player-stat projections. Users select whether players will finish Higher or Lower than the displayed benchmark.
Depending on your location, Underdog may offer either Pick’em Classic or Pick’em Champions.
Champions is a peer-to-peer fantasy format in which entries compete against other users for prizes rather than simply playing against a fixed house payout. Availability and contest rules vary by state.
Pick’em should also be distinguished from Prediction Picks, which are now a separate product within Underdog.
Prediction Picks are event contracts based on real-world outcomes.
Instead of selecting Higher or Lower on a fantasy projection, users can take positions on outcomes such as a team winning a game, covering a spread or whether a total finishes above or below a particular number.
Contracts are priced in dollars and cents based on the market-implied probability of the outcome. For example, a contract trading at $0.65 represents an implied probability of roughly 65%.
If the contract settles correctly, it generally pays $1. If it settles incorrectly, it pays $0. Exchange fees may also apply.
Underdog currently sources Prediction Picks through multiple regulated exchanges, including its own UDX exchange, Kalshi and Nadex. The rules and settlement procedures for an individual market depend on the exchange providing it.
The distinction is important.
Pick’em is a fantasy sports product centered on player-stat projections.
Prediction Picks are event contracts traded through regulated exchanges and can cover team outcomes, spreads, totals and other markets.
They also have separate state-eligibility rules. A user may therefore have access to Prediction Picks without having access to Underdog Pick’em or Best Ball.
Underdog offers fantasy contests or prediction products across a broad range of sports.
Depending on your location and the product you are using, coverage can include:
The exact sports and leagues available change throughout the year and can differ between Drafts, Pick’em and Prediction Picks.
For a wider comparison of available fantasy platforms, see our guide to the best daily fantasy sports sites.
The Underdog app remains one of the platform’s strongest features.
Best Ball drafts, Pick’em, Prediction Picks, promotions, account settings and banking are all accessible through a relatively clean interface. Underdog is available on iOS and Android, while users can also access the platform through a browser.
As of September 2026, Underdog has strong ratings on both major app stores:
Apple App Store: 4.8/5 from approximately 321,000 ratings
Google Play: 4.6/5 from approximately 33,000 reviews and more than 1 million downloads
App-store ratings change frequently, but these numbers provide useful independent evidence that the mobile experience is generally well received.
Underdog currently offers a much broader selection of payment methods than the platform did in the past.
Deposit options can include credit and debit cards, PayPal, Trustly, Venmo, Apple Pay and Google Pay, depending on your device and account. The minimum deposit is $10.
See our full guide to Underdog banking options for more information.
Withdrawals have a standard minimum of $10 unless your entire remaining account balance is below $10. Eligible methods can include Visa or Mastercard debit cards, PayPal, Venmo, Trustly and qualifying Apple Pay debit cards.
Credit cards and prepaid cards cannot be used for withdrawals.
Underdog states that withdrawal requests normally require 48 to 72 hours for processing. Additional time can be required depending on the payment method.
For more information, see our guide to Underdog payouts and withdrawals.
Yes. Eligible withdrawable cash can be withdrawn after the required account and transaction checks are completed.
The important distinction is between withdrawable cash and bonus cash. Promotional bonus funds generally need to satisfy their applicable playthrough requirements before they become withdrawable.
Yes. Underdog is an established real-money fantasy sports operator, although the legal and regulatory framework depends on the product being used.
Best Ball, Drafts and Pick’em are fantasy sports products. Prediction Picks are different: they are event contracts traded through regulated exchanges.
Users must also satisfy age, identity and location requirements. Underdog uses a user’s physical location when determining whether a particular product is available rather than relying only on their state of residence.
That means the better question is not simply whether “Underdog is legal,” but whether the specific Underdog product you want to use is available in your location.
Underdog availability varies significantly by product.
As of September 2026, Prediction Picks are available in 46 states plus Washington, D.C. They are currently unavailable in:
Traditional fantasy availability is narrower.
Underdog stopped accepting new fantasy contest entries, including Best Ball, in Maryland, Massachusetts, Michigan, Mississippi, New Jersey, Ohio and Pennsylvania in September 2026. Prediction Picks remain available in several of those states.
New York is another useful example of why the distinction matters: Drafts are currently available there, while Pick’em and Prediction Picks are not.
Age requirements can also differ by state and product.
Because these rules can change, see our dedicated Underdog Fantasy legal states guide for the latest state-by-state breakdown.
Underdog currently offers customer support through both chat and email.
Chat is the company’s recommended and fastest support option. In the app, users can open the Account section and select Contact Support. On the Underdog website, support is available through the chat icon.
Users can also contact Underdog by email.
This is an improvement over the platform’s older support setup, which was more heavily dependent on help-center articles and email. There is still no prominently advertised general phone-support channel, but live digital support is available.
Common support issues include identity verification, deposits, withdrawals, location eligibility, contest grading and promotional funds.
Underdog differs from the largest traditional DFS platforms because it puts much more emphasis on Best Ball, drafts and player-pick formats than classic salary-cap contests.
Its addition of Prediction Picks also means Underdog now crosses into prediction markets as well as fantasy sports.
DraftKings has a much larger traditional DFS ecosystem built around salary-cap contests, daily slates and large tournament fields.
Underdog is more specialized around Best Ball, drafts and faster fantasy formats.
For users who primarily want traditional salary-cap DFS, DraftKings offers the deeper product. Underdog is the more natural comparison for users focused on Best Ball and draft-based fantasy.
FanDuel is another established traditional DFS platform with salary-cap contests across major U.S. sports.
Underdog takes a different approach, with a greater emphasis on Best Ball, Pick’em and shorter draft formats.
The main difference therefore comes down to the type of fantasy experience you want rather than one platform simply offering more of the same product.
PrizePicks is the closest comparison to Underdog for player-projection Pick’em contests.
PrizePicks is primarily associated with its player-pick experience, while Underdog combines Pick’em with Best Ball, Battle Royale and other draft formats.
Underdog has also expanded into Prediction Picks, giving the app a separate prediction-market component alongside its fantasy products.
Underdog is particularly well suited to fantasy players who enjoy drafting.
Best Ball remains the standout product because it provides the strategy and enjoyment of a fantasy draft without requiring weekly lineup management.
Pick’em gives users a faster player-projection format, while Prediction Picks have expanded the app for users interested in event contracts and prediction markets.
Underdog is less suited to players whose main priority is traditional salary-cap DFS. DraftKings and FanDuel have substantially deeper products in that specific category.
The other major consideration is location. Before signing up or depositing, make sure the specific contest or product you want to use is available where you are physically located.
Underdog is a real-money fantasy sports platform best known for Best Ball, drafts and Pick’em contests. It now also offers Prediction Picks, which are event contracts rather than traditional fantasy contests.
Yes. Underdog is an established real-money fantasy sports operator. However, availability depends on the user’s physical location and the specific Underdog product they want to access.
Underdog offers Best Ball, Battle Royale and other draft contests, as well as Pick’em fantasy contests. It also offers Prediction Picks through regulated exchanges in eligible states.
Pick’em is a fantasy sports product built around player-stat projections.
Prediction Picks are event contracts tied to real-world outcomes such as game winners, spreads and totals. Contract prices reflect the market-implied probability of an outcome and generally settle at either $1 or $0.
As of September 2026, Prediction Picks are available in 46 states plus Washington, D.C.
They are currently unavailable in Arizona, Michigan, Nevada and New York.
Yes. Underdog is available for iOS and Android and can also be accessed through a web browser.
Underdog states that withdrawals normally require 48 to 72 hours for processing. Additional time may be required for the funds to reach you depending on the withdrawal method.
Yes. Underdog offers support through chat in the app and on its website. Email support is also available.
Yes. Best Ball remains one of Underdog’s core fantasy products. After the draft, Underdog automatically selects the highest-scoring eligible lineup, so users do not need to make weekly start/sit decisions.
Underdog’s Best Ball, Draft and Pick’em products are fantasy sports contests rather than a conventional sportsbook.Prediction Picks are different. They are event contracts traded through regulated exchanges and can include outcomes that resemble sportsbook markets, such as winners, spreads and totals.