Underdog Review September 2026: Claim your Promo Code!

The first item on our agenda within our Underdog review is the current welcome bonus. New players who create and verify their accounts can participate in the 'Play $5, Get $50' in bonus entries. This bonus will be credited to your account and can be used to join various types of contests covering all major US sports.

To participate, you must be a new customer, at least 18 (at least 19 in AL, NE; at least 19 in CO for some games; 21+ in AZ, MA, and VA) and present in a state where Underdog operates. The offer is not valid in MD, MI, NJ, NY, OH, and PA.

Terms and conditions apply.

Concerned with your play? Call 1-800-MY-RESET or 1-800-GAMBLER or visit www.ncpgambling.org; AZ: 1-800-NEXT-STEP (1-800-639-8783) or text NEXT-STEP to 53342; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369).

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United States of America, New Jersey, Pennsylvania & more

DFS Deposit Bonus

Play Now at Underdog

T&Cs and 18+ apply

Code

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Virginia, United States of America, Colorado & more

DFS Welcome Bonus

50% first time deposit match up to $1,000 in Bonus Funds

T&Cs and 18+ apply

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Must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ, MA, and VA) and present in a state where Underdog Fantasy operates. Terms apply. Offer not valid in MD, MI, NJ, NY, OH, and PA. Concerned with your play? Call 1-800-MY-RESET or 1-800-GAMBLER or visit www.ncpgambling.org; AZ: 1-800-NEXT-STEP (1-800-639-8783) or text NEXT-STEP to 53342; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369).

Is Underdog available in your state?

Check out our table below to see if Underdog is available in your state and also be on the lookout for your state-exclusive promo code so you can start enjoying their welcome offer today:

In the same vein as our ParlayPlay review, you’ll find that Underdog leaves a memorable first impression with its understated, yet classy, online interface.

Underdog offers a clean and modern interface that makes it easy to browse contests, review player stats and projections, and submit entries without much effort. The site is simple to move around, with featured contests, account tools, and navigation menus clearly laid out from the start.

Creating an account is quick, and once you are in, it only takes a few taps or clicks to explore the fantasy products available in your region. The overall design feels polished rather than cluttered, which makes the platform appealing to both newer fantasy players and more experienced users.

Creating an account with Underdog

1. Simply click on the link and hit the Sign Up button.
2. Fill in all of your personal information and accept the terms and conditions.
3. Verify your email and provide proof of identity.
4. Log in, make a deposit, and claim the Underdog promo code.

Once you have done this, you can utilize the extensive player opportunities by partaking in the multitude of fantasy sports leagues that are offered.

Underdog has dedicated apps for Apple and Android devices, and the mobile experience is one of the platform’s strongest features. The app is quick to load, easy to navigate, and gives you access to the same core fantasy products and account tools found on desktop.

It is easy to browse contests, check player information, and manage your account from your phone. You can also access Underdog through your mobile browser, which gives you another way to use the platform without relying entirely on the app.

Underdog offers a simple set of payment methods that cover the essentials well. Players can deposit using Apple Pay, credit or debit cards, Trustly, PayPal, and Venmo, with a minimum deposit of $10 applying.

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For withdrawals, players can use PayPal, Trustly, and Paysafe. Withdrawal requests are typically processed within 48 to 72 hours, although the exact time to receive funds can vary by method. PayPal withdrawals typically arrive around 48 hours after processing, while Trustly withdrawals can take up to 3 business days to post. Withdrawals are generally free and usually require a minimum of $10 unless the remaining balance is lower than that amount.

Underdog provides support through its app and help center, giving players access to assistance with payments, account issues, promotions, and contest questions. The help center covers many common topics, making it a useful first stop if you want a quick answer without waiting for direct support.

The support setup is not the widest in the fantasy space, but it is easy enough to use and should be more than enough for most players. If you do run into a problem, the platform gives you a clear route to get help through the app.

Underdog is available in eligible states, with product availability depending on where you are located. That means not every user will see the same fantasy formats or contest types, so checking state eligibility before signing up is important.

Players can review the platform’s rules, terms, privacy materials, and responsible gaming information before entering contests. Underdog also offers responsible play tools such as deposit limits, entry fee limits, entry count limits, cool-off options, and self-exclusion features to help users stay in control.

As part of our Underdog review, we’ve run through the additional rewards that are offered by the platform. Unlike our Draftkings Fantasy Review, a fully-fledged VIP experience is absent on the site. This shouldn’t impact your decision too much though.

Underdog regularly runs promotions for eligible players, including bonus-entry offers and event-specific promos tied to major sports and tournaments. These can change throughout the year, so active players may find new offers appearing around key events and featured contests.

Rather than focusing on a traditional loyalty program, Underdog keeps things fresh with rotating promotions that can add extra value to the fantasy experience. Following the brand’s official channels can also help you keep up with new offers as they appear.