Underdog Fantasy Review: Is Underdog Fantasy Legit for US Players in 2025?

After registering with Underdog Fantasy, you’ll be able to make your way over to the cashier section of the site and receive a 100% matched deposit bonus of up to $100.

We didn’t find any need to enter an Underdog Fantasy promo code. However, you will be required to play through the bonus, and your deposit once before it will be considered eligible for withdrawal. A minimum deposit of $10 must be made but you can enter almost all competitions for less than $5. We also found no time limits attached to the bonus.

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When visiting the Underdog Fantasy site, we were met with yellows, whites, and grays. The contrasting color scheme allows for text to be read and important links easily identified.

In the top right-hand corner, you’ll be able to sign in, or you can sign yourself up by simply pressing the green button in the middle of the screen. The process itself is straightforward, requiring some basic personal information to be entered. When submitted, you’ll be ready to roam the site and use the 100% deposit match bonus.

Once onsite, you’ll notice a scrollable lobby that highlights the top tournaments and upcoming competitions. Across the top of your screen, you’ll notice you can switch between Drafts, Pick ’em, Live, Results, Ranking, and News Feed, allowing you to navigate around the site within a few clicks.

When making our way through the selection of sports and competitions, we found that we could enter by simply clicking the enter button. A prompt to confirm that money would be taken from our account was displayed before confirming and securing a prompt competition entry.

For those of you who like the ability to enter competitions and draft your dream team on the go, you’ll be pleased to hear that Underdog Fantasy has a dedicated mobile app that can be accessed through respective app stores.

When downloading and using the Underdog Fantasy app, we found all the efficiency and speed found across its desktop counterpart had been mimicked, alongside the chance to enter the same range of Underdog Fantasy competitions. As expected, the mobile app had been optimized in such a way that allowed things to work more fluidly across the smaller screen, including the addition of drop-down menus and scrollable menus.

When heading to the cashier section of the site, we found a small yet credible selection of payment methods available. Alongside traditional card payments, we were also offered the chance to deposit using PayPal. All methods had a $10 minimum deposit requirement and were completely free to use.

PayPal and Interchecks are the only two withdrawal methods provided by Underdog. A minimum of $10 must be in your account before any withdrawal can be processed, and we know that each withdrawal will be processed within 48-72 hours.

Although the range of support options wasn’t as extensive as those detailed in our Draftkings fantasy review, Underdog provided a similar experience regarding response times and reliability.

When making our way around the site, we found that you could get in contact with support by simply selecting the question mark in the bottom right-hand corner of the screen. Instantly, this would open up a chat box that allows you to forward your request to an agent.

Alternatively, you could head to the account section, select contact support, and submit a query using the onsite form. We found that both methods provided effective ways to get any concerns resolved and responses were always helpful and knowledgeable.

For those with a little understanding of daily fantasy sports, the zendesk provided a few FAQs to help self-diagnose any problems you may face along the way, too.

In this next section of our Underdog fantasy review, we look to confirm the legitimacy and legal standing of the up-and-coming DFS operator.

To begin, Underdog is a daily fantasy sports provider that is legal to operate in all US states, except for:

• Connecticut
• Delaware
• Hawaii
• Idaho
• Iowa
• Louisiana
• Montana
• Nevada
• Washington

Underdog offers complete transparency surrounding terms and conditions, allows full access to the privacy policy, and makes use of the latest data encryption technology, too.

Beyond the above, we also soon found that it is also a silver member of the NCPG and provides tools to help promote responsible gambling.

Just as we found in our latest Monkey Knife Fight Review, there is currently no VIP program to speak of at Underdog Fantasy. However, that doesn’t mean that additional perks aren’t available to returning players.

In fact, when making our way around the DFS operator, we soon found the opportunity to refer friends and receive $10 as soon as they had registered. Alongside the refer-a-friend bonus, we also spotted the chance to pick up multiplier boosts and special lines, Plus, you can request 100% money back on your first competition, if you are not satisfied with the experience - nothing says fairer than that.