Underdog Fantasy burst onto the fantasy sports and daily fantasy sports (DFS) scene when it launched in 2019, and it has quickly become one of the most popular platforms for Best Ball and DFS action.

The Underdog app and game platform  is considered DFS, but there are many overlaps with player prop sports betting with their “Pick ‘em” game mode which includes “Over/Under” and “Rivals.” We’ll break down everything you need to know about Underdog Fantasy for fantasy players and sports bettors.

What is the best Underdog Fantasy Promo Code?

To take advantage of the best welcome bonus offered by Underdog, use promo code FTN for a 100% deposit match on your first deposit up to $100.

What is Underdog Fantasy?

Underdog Fantasy is a DFS and Best Ball platform that was founded in 2019 and is headquartered in the United States.

It offers one of the most popular Best Ball platforms in all of fantasy sports. They offer standard leagues with both slow and fast drafts. They also host some massive tournaments, like Best Ball Mania, which offers a $1 million prize to first place.

In short, Underdog Fantasy has taken Best Ball — and Best Ball tournaments — to the next level.

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But Underdog has also gained steam with those looking for some additional ways to play DFS in a way a little more similar to sports betting.

Similar to PrizePicks or Monkey Knife Fight, Underdog also offers a popular mode called Pick ‘Em where you — the fantasy player — goes up against the house rather than other players (like on DraftKings or FanDuel). Beat the lines set by Underdog and win. It’s that simple.

Underdog Fantasy is available on the web or via a mobile app, available on both the Google Play Store and Apple App Store. You can sign up using this Underdog Fantasy registration link and code FTN for a deposit bonus.

How does Underdog Fantasy work?

There are several ways to play on Underdog. These include Best Ball, Pick ‘em, and Battle Royales. Let’s run through these options.

Best Ball on Underdog Fantasy

The most popular format on Underdog in the offseason is called Best Ball. You draft a team of 18 players (in the NFL — they offer other sports as well) and then … you do nothing. No waiver moves. No trades. No making the wrong weekly lineup choice. You get your team’s highest possible score each week.

You can either do a league (for example, against 12 other players) where the top three teams win, or you can do a major tournament (where only a small fraction of teams advance to the playoffs).

Battle Royale on Underdog Fantasy

Battle Royale is close to the way you play DFS on DraftKings and FanDuel, where you draft a team just for a single game or a single week. On Underdog Battle Royale, you draft your team in a traditional snake draft. 

Pick ‘Em (Over/Under and Rivals) on Underdog

There are two Pick ‘Em games on Underdog: Over/Under and Rivals.

In Over/Under, you pick between 2-5 players that you think will go over or under certain player prop lines set by Underdog. For example, will Patrick Mahomes have over or under 274.5 passing yards?

Here’s how the over/under payouts work: 2 right (win 3x buy-in), 3 right (6x buy-in), 4 right (10x buy-in), 5 right (20x buy-in).

In Rivals, you pick between two players and which will have the better stat line. For example, will Cooper Kupp or Tyreek Hill have more receiving yards? 

Underdog Fantasy pros and cons

Pros of Underdog Fantasy: 

  • Very easy to understand and play
  • The best Best Ball tournaments in the world
  • Numerous fun game options to always keep it fresh
  • Best-in-class mobile app
  • Great support and social media presence
  • Great promo code offer with code FTN

Cons:

  • Not every part of Underdog Fantasy is offered in every state that allows other DFS platforms like DraftKings and FanDuel
  • Not as many sports offered as other platforms for all game modes (though the number of sports is growing fast)

What sports you can play on Underdog Fantasy?

Underdog Fantasy offers a wide range of sports for DFS fantasy sports to jump in on, including:

  • NFL
  • NBA
  • NHL
  • MLB
  • College Football
  • eSports
  • Golf
  • More

What states can I play on Underdog?

Here’s what Underdog Fantasy has to say about the subject, as the answer will depend on the game mode:

The following states do not operate for Underdog Fantasy Drafts:

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

Underdog Fantasy Pick'em does not operate in the following states:

  • Arizona
  • Colorado
  • Connecticut
  • Delaware
  • Hawaii
  • Idaho
  • Iowa
  • Louisiana
  • Missouri
  • Montana
  • New Hampshire
  • New Jersey
  • Nevada
  • Ohio
  • Pennsylvania
  • Tennessee
  • Washington

To play college pick'em, you are unable to be located in these states. Keep in mind, you can still play normal pick'em.

  • Arkansas
  • Indiana
  • Maine
  • Maryland
  • Massachusetts
  • Mississippi
  • New York
  • Vermont

The above is sourced from Underdog Fantasy Rules with minor modifications.

Underdog Fantasy FAQs

Is Underdog Fantasy legal?

Yes, if you are in Canada or in one of the U.S. states in which Underdog Fantasy is licensed to play. Underdog Fantasy is considered a daily fantasy sports (DFS) contest, which is legal in the United States.

Does Underdog Fantasy have a mobile app?

Yes, Underdog Fantasy has an app for both Android and iPhone users.

Does Underdog Fantasy have any deposit bonuses? 

Sign up with using this Underdog Fantasy registration link and code FTN for a deposit bonus.

See more Underdog Fantasy Rules here.