Underdog Fantasy Promo Code & Review

Known for its popular Best Ball and Battle Royale game modes, Underdog is rapidly establishing itself as one of the best daily fantasy sports platforms in the country.

Underdog boasts a quality mobile app, big-money contests, and some high-profile investors, including the likes of Mark Cuban, Kevin Durant, Steve Aoki, and Odell Beckham Jr. Plus, when you claim the $1,000 Underdog welcome bonus with promo code GTODAY, you can get your first deposit matched 50% for up to $1,000 in bonus funds and get a free pick’em special.

Claim Your $1,000 Bonus at Underdog Fantasy Today

Claim Your $1,000 Bonus at Underdog Fantasy Today

Up to $1,000

In Bonus Cash

Underdog Review

• Get up to $1,000 in Bonus Cash
• PLUS a Pick'Em Special on Deposit
• Win Up to 100x Your Entry in a Single Night
• Use Bonus Code: GTODAY

Play Now

In the following Underdog Fantasy review, we’ll cover how to sign up with Underdog, unlock the welcome bonus, enter contests, deposit money, withdraw winnings, and contact customer service. Keep reading for a full review of Underdog.

Underdog Promo Code for New Users: Verified for March 2025

Sign up for a new account using the Underdog promo code GTODAY and claim a 50% deposit match welcome bonus worth up to $1,000. You also get a free pick’em special. While the pick’em special will vary, it tends to be something that’s almost guaranteed to win. For example, it might be Patrick Mahomes over 0.5 passing yards in that week’s game.

Pick’Em Special is not available to users in Kansas, Maryland, Michigan, Mississippi, New Hampshire, New Jersey, Ohio, and Pennsylvania. 

• Terms and conditions: Must be 18 or older in a state where Underdog is legal. Applies exclusively to your first deposit and pays out in bonus credit. Bonus credit expires if not wagered within 60 days. Must play through your deposit + bonus one time before you can withdraw winnings from your bonus credits.
• Responsible gambling: Remember to play responsibly. If you want to take steps to limit your gambling, consult the Responsible Gaming menu of the Underdog site (located in the site footer) for a list of resources.

How to Sign Up with Underdog and Claim the Bonus Offer

Here’s a complete list of steps to register for an account.

1. Click any link in this view to visit the Underdog site.
2. Click the “Sign Up” button, and you will be redirected to the registration form.
3. Input all of the required information (full name, address, date of birth, email, etc.) and enter a password that you will use to access your new account. Be sure to use the Underdog promo code GTODAY to claim your $1,000 welcome bonus.
4. If prompted, upload a photo of your ID to verify your details are accurate.
5. Select an available payment option and make your first deposit. Remember that there is a $10 minimum, and your first deposit will be matched 50% by Underdog up to $1,000. So you must deposit $2,000 to get the full $1,000 bonus.

After you’ve completed the registration process and made your first deposit, all that’s left is to start playing with Underdog. Follow a link on the site to download the iOS or Android app, or play in your desktop web browser.

Underdog Fantasy Pros and Cons

Underdog is one of the top DFS platforms on the market, and there is definitely a lot to like about the platform. At the same time, there are still some drawbacks to be aware of before downloading. Here’s our list of Underdog pros and cons:

Underdog Promotions for Existing Customers 

Any DFS platform worth its salt will look after its customers with a healthy welcome bonus and some promos afterward. At Underdog, you can claim not only a 50% match on your first deposit but also a few recurring promos.

The bulk of these recurring promotions come in the form of multiplier boosts and specials. For instance, you might see a particular Pick’em selection boosted from a 20x payout multiplier to a 40x payout multiplier. Alternatively, where a special is concerned, you might see a Pick’em selection with a heavily discounted point projection (e.g., an NBA player’s point total could be reduced from 28 points to 20 points, making it easier to take the over).

Underdog also runs contests periodically, like the very popular Best Ball Mania. In these contests, you can play against thousands of other entrants for a chance to win a share of a mammoth prize pool. For instance, Best Ball Mania III had over 450,000 entrants competing for a prize pool of over $10,000,000, with a grand prize of $2,000,000, and a second-place prize of $1,000,000.

Finally, Underdog always runs a $10 refer-a-friend offer. If you get a friend to sign up with Underdog using a link you sent them, Underdog will send you $10 in bonus cash.

Underdog Sportsbook Review

In the next section, we’ll give you some more information about the features that you’ll find at Underdog, along with some important details about how to move money and contact customer support.

Types of Bets Available

Underdog offers three types of DFS contests: Best Ball, Battle Royale, and Pick’em. We’ll outline each of these options briefly below.

Best Ball contests are season-long, snake-draft fantasy leagues that get rid of all of the usual management hassles, like lineups, waivers, substitutions, and trades. Just pick a league, pay the entry fee, and draft your team. Every week going forward, your highest-scoring lineup will automatically be selected for you—hence the “Best Ball” name.

Battle Royale contests are day-long or week-long snake-draft leagues, ideal for players who aren’t looking for a long-term commitment. For instance, you could join a draft league for one particular NFL Sunday. Just pay the entry fee, draft your team, and when that day’s action is over, whichever player scored the most points wins.

Finally, the most casual Underdog Fantasy game mode is Pick’em. Here, you combine multiple player props—either “higher or lower” totals picks or “rivals” head-to-head picks—into a contest entry similar to a parlay. For example, you could pick Joe Burrow to throw for more passing yards than Patrick Mahomes and combine that with Joel Embiid to exceed his project point total.

Your payout will depend on how many picks you correctly combine. Note that, like with parlay wagering, if any one of your picks is incorrect, your full entry will lose. See below for a full breakdown of how Underdog Pick’em contests work.

Bonuses, Promotions, and Rewards

Headlining the list of promotions at Underdog Fantasy is the welcome bonus, which comes in the form of a 50% deposit match on your first deposit, up to $1,000. You simply need to enter the Underdog promo code GTODAY when signing up to be eligible.

In addition, Underdog will offer multiplier boosts and Pick’em specials, which can get you added value on specific picks. Plus, Underdog frequently runs contests like its famous Best Ball Mania series, with jaw-dropping total prize pools and million-dollar grand prizes.

Underdog could always stand to improve this selection of boosts—particularly with more daily multipliers—but overall its bonus offerings are competitive with what’s available at similar platforms.

App Reliability and Ease of Use

If you’re looking for a DFS platform to play on your mobile device, Underdog is definitely worth considering. Its mobile app is very popular and has garnered heaps of praise from customers on both the Apple App Store and Google Play Store. It has an average rating of 4.7/5 on the App Store and 4.4/5 on the Play Store.

The app is super intuitive and easy to use and makes it easy to browse Best Ball and Battle Royale contests, check in on your active contests, or lock in Pick’em entries with just a couple of clicks. On top of that, the app is super reliable and updates fast, meaning you don’t have to worry about it lagging or crashing.

Cashiering and Banking

When depositing money into your Underdog account, you can use a credit/debit card or a PayPal account. These options process instantly and have a low $10 minimum payment, meaning depositing funds is very convenient.

Withdrawing money from your Underdog account is slightly less convenient, as you do not have the option to use a credit or debit card, even if that’s what you used to deposit. You can only request a payment via PayPal, which will take up to two days, or eCheck, which can take up to four days.

Customer Service

While Underdog does have customer support representatives on hand to resolve any issues you might encounter, Underdog could stand to add more options when it comes to getting in touch with them. Currently, the only option is to submit a customer support ticket on the website, and Underdog will email you back to follow up. Adding a live chat, phone, or even email option would make getting in touch with support staff easier.

Underdog Customer Reviews

Here’s what current users have had to say about the Underdog iOS and Android apps.

What Can I Bet on at Underdog?

Underdog offers a very good range of sports. You can enter contests for major leagues like the NFL, NBA, NHL, MLB, and PGA, plus more niche sports like boxing, esports, F1, MMA, NASCAR, soccer, and tennis.

Responsible Gaming

Always gamble responsibly when using an online sportsbook or daily fantasy sports platform like Underdog. Remember to play for fun, not as a way to make money, and do not gamble money that you cannot afford to lose.

If you want to set limits on your Underdog account, visit the Responsible Gaming menu. These limits can take the form of notifications if you exceed pre-set deposit or entry amounts, or restrictions on how much you can deposit, how much you spend on entry fees, or how many contests you can enter.

You can also add yourself to a self-exclusion list directly from the Underdog platform if you want to take a complete break from gaming.

Underdog Fantasy In-person Location

There are no Underdog retail locations, and there is currently no way to enter Underdog contests in person. To play with Underdog, register for an account and download the app, or play in your web browser.

Underdog Fantasy FAQ