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Underdog Rivals Rules Explained: How does Underdog Rivals Work?

Last Updated on 01/12/2025
Fact checked by: Drew the DFS Guy

The Underdog Fantasy Rivals contest puts two athletes head-to-head in a one-on-one stats battle. Your task is to establish which athlete is going to contribute towards a winning Pick ‘em entry.

As you’ll soon see, the Underdog Rivals rules are fairly straightforward. In short, you’ll need to select an athlete based on the likelihood of them outperforming their “rival” in a specific stat battle. This selection can then be added to between one and four additional selections, building a max payout of up to 20x.

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Underdog Fantasy Rivals: Pros & Cons
Underdog Fantasy Rivals: Pros & Cons
  • Use your new customer bonus
  • Set payouts of between 3x and 20x
  • Add selections to your entry with one click
  • Past performances provided
  • Available in over 30 US states

Underdog Rivals Explained: How does Rivals work on Underdog?

If you’ve spent any amount of time working your way around the Underdog Fantasy betting app, then you’ll already be relatively familiar with Pick ‘Em entries. For those of you who are completely new, Underdog’s Pick ‘Em allows you to select between 2 and 5 players/athletes who you believe will reach a certain number of points across a specific statistical field. Alternatively, you can pick between two competing ‘rivals’. The idea is simple enough: should your predictions run true, you’ll win a set payout ranging from 3x to 20x. Your Pick’ Em selections are split into two categories. The first is a simple higher/lower entry, allowing you to select whether a certain player will hit higher or lower than a preset threshold. The second category is Rivals.

Underdog Rivals rules: Let the player battles commence

Instead of selecting whether one single athlete will reach a preset milestone throughout the course of a match, Rivals allows you to predict the highest-scoring player in a 1 v 1 matchup.

For example, you may find that you can choose between Joe Mixon and Trayveon Williams to see who will score the most rushing yards in Cincinnati’s upcoming fixture. In this instance, you will not be predicting the number of rushing yards gained; rather, who will gain the most rushing yards.

If you follow the Bengals or football in general, you’ll know that Joe Mixon is the number-one choice in this match-up. So, in order to level the playing field, you’ll find that a positive points amendment will be added.

Using the same example, you would expect to see a number of additional yards added to Trayveon Williams's scorecard, providing the athlete with a head start and requiring fewer yards to be deemed the winner of this Rivals match-up.

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Step-by-step: A quick guide to help create your Underdog Fantasy Rivals entry

Now you’ve got an understanding of the Underdog Rivals rules and how it works, let us talk you through the process of opening your account and creating your first entry.

Register online or on the go

Decide whether you want to head on over to the Underdog website or open up the Apple/Play store. Once you’ve landed on the site or downloaded the app, you can get started by clicking the Sign Up button.

Enter your personal details

Work your way through the simple registration process, entering a few basic details, creating a username and password, and entering the exclusive bonus code: CAPTAINFAN.

Verify your account

As comes as standard with all credible DFS betting sites, you’ll be expected to link your email address and pass standard KYC checks. It is at this stage that you will need to have copies of your photo ID and a household bill at the ready.

Make your first deposit

After your account has been authorized, you’ll be free to head to the cashier section of the site and make your first deposit. Remember, your first deposit will be matched in its entirety up to the value of $100.

Check out your bonus

A successful deposit will release your funds and bonus bets into your account. Plus, those of you using the exclusive bonus code: CAPTAINFAN will also find that you can claim a Pick’ Em Special.

Submit your first entry

Work your way between Rivals and higher/lower selections to help create your first Pick’ Em entry. Depending on the number of selections, you’ll find that payouts will vary between 3x and 20x. Plus, on occasion, you may even find a boost has been added, too.

Play Underdog Fantasy Rivals today

By now, you should be happy with how Rivals works on Underdog. As established, Rivals is one of two categories from Underdog Pick ‘Em that focuses on the winner of a 1 v 1 battle.

We believe that Underdog Rivals rules are fair and straightforward to follow. Instead of selecting whether your athlete will reach a certain stat, you’ll be deciding whether your chosen athlete outperforms their rival. You can add your selections to your Pick ‘Em entry, unlocking a 3-20x potential payout depending on the number of final selections.

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Underdog Rivals Rules FAQ

📱 Can I play Underdog fantasy rivals through an app?

Yes. As we have detailed extensively in our latest Underdog Fantasy review, the fantasy sports platform provides you with a dedicated mobile app available for both iOS and Android users.

🏈 What sports will I find playing Underdog fantasy rivals?

Underdog Fantasy provides a fair selection of sports and major leagues to choose between, including NFL, MLB, NBA, and NHL. Plus, depending on the sporting calendar, you can also find everything from esports to MMA covered.

✅ Where can I find the Underdog Rivals rules?

Once you’ve established that you live in one of Underdog Fantasy’s legal states and registered for an account, you’ll find that you have complete access to terms and conditions and the Underdog Rivals rules. 

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