When you sign up for a new DFS account with the Underdog promo code TOPACTION, place a $5+ initial entry to get $50 in bonus cash back, win or lose. Underdog Fantasy is one of the premier destinations for daily fantasy sports right now and you can create entries containing players from any sport with the Underdog promo code TOPACTION, including MLB. Get started now by clicking on this link or the sign-up module below.
Because Underdog Fantasy is legal in a majority of U.S. states, it provides one of the best alternatives to the top MLB betting promos in locations where online sports betting is not legal yet. Check out the chart below to determine which states you can sign up with the Underdog Fantasy promo code TOPACTION in.
| Underdog Fantasy Promo | States Available | Underdog Promo Code Sign-Up Link |
|---|---|---|
| Play $5, Get $50 | AL, AK, AR, DC, FL, GA, IL, IN, KS, ME, MS, MN, NE, NM, NC, ND, OK, OR, RI, SC, SD, TX, VT, VA, UT, WI, WY | TOPACTION |
Underdog Promo Code TOPACTION: Play $5+ MLB Entry, Get $50 Bonus Today
Let's take a look at how the Underdog promo code TOPACTION works when you register for a new account today and place a $5+ first entry. Remember, once you place your qualifying your entry, you are eligible for a $50 bonus, win or lose. Let's run through an example and explain how entries work at Underdog Fantasy.
There are different formats to choose from for your first entry: Standard or Flex. A Standard entry provides the most significant payout and requires you to win all picks to receive it. Alternatively, a Flex entry provides a payout if you win all of your picks or lose just one, albeit for a smaller payout multiplier.
Here is an example of a $5 Standard entry I placed using MLB picks with the Underdog Fantasy promo code TOPACTION:
- Kyle Bradish LOWER than 4.5 Strikeouts
- Junior Caminero HIGHER than 1.5 Hits + Runs + RBI
- Aaron Judge HIGHER than 10.5 Fantasy Points
This Standard entry has a 6.4x payout multiplier. Here is how it works in the context of the welcome offer:
- If all picks win, I receive a $32 total payout ($27 profit + $5 entry returned) and $50 in bonus cash.
- If one or more picks lose, I receive $50 in bonus cash only.
Remember to use the Underdog promo code TOPACTION to claim your bonus today.
Steps to Claim Your Underdog Fantasy Promo: Tuesday, August 26, 2025
Follow the steps outlined below to claim your $50 play-through bonus with the Underdog promo code TOPACTION today:
- Step 1: Click this link or any sign-up module on this page to download the Underdog app.
- Step 2: Create a username and password.
- Step 3: Fill in your email, date of birth, and all other required personal information to create a new Underdog account.
- Step 4: Enter the Underdog promo code TOPACTION and play a $5+ entry to get $50 in bonus cash.
- Step 5: Agree to the Underdog Terms of Use and Privacy Policy.
- Step 6: Click "Sign Up."
- Step 7: Make your first deposit of $10+.
- Step 8: Create your first entry at Underdog with picks from any sport, including MLB.
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. See assets.underdogfantasy.com/web/PlayandGetTerms_DFS_.html for details. Offer not valid in MD, MI, NY, OH, and PA. Concerned with your play? Call 1-800-GAMBLER or visit www.ncpgambling.org; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369)