The Underdog promo code TOPACTION provides new users with a unique $100 bonus offer when you sign up for a new daily fantasy sports account today. Simply register now and play $5+ at Underdog to get $100 in bonus funds or entries. You have a 50% chance at receiving either offer, but each one is valued at $100. With the Underdog promo code TOPACTION, the $100 in bonus funds can be utilized for any draft contest or entry. The $100 in entries come as 10 $10 entries.
Place entries containing picks from any sporting event today, including Eagles vs. Giants on Thursday Night Football at 8:15 p.m. ET. To get started with the Underdog promo code TOPACTION, click on the sign-up module below.
Underdog represents an excellent alternative to online sports betting because the app is legal in a majority of U.S. states. Claim one of the best options away from the top NFL betting promos now. Take a look at the chart below for more information about the Underdog Fantasy promo code TOPACTION, including where the offer is available to new users right now.
| Underdog Promo Offer | DFS States Available | Underdog Promo Code Sign-Up Link |
|---|---|---|
| Play $5, Get $100 in Bonus Funds or Entries | 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: Create Entries for Eagles vs. Giants Thursday Night Football
When you sign up with the Underdog promo code TOPACTION today, claim a unique DFS welcome offer to get a $100 bonus. There are two different bonus formats available at Underdog, and you have an equal chance at receiving them. Simply sign up with the Underdog Fantasy promo code TOPACTION and play $5+ to get either $100 in bonus funds or 10 $10 entries.
There are two different entry formats available to choose from at Underdog: Standard and Flex. A Standard entry provides the largest payout and requires all of your picks to win to receive it. Alternatively, a Flex entry yields a smaller payout for going perfect and roughly the amount of your entry back if you lose just one pick.
For example, here is a look at a $5 Standard entry I played with the Underdog promo code TOPACTION, which has a 9x payout multiplier:
- Jaxson Dart Lower Than 177.5 Passing Yards
- Dallas Goedert Higher Than 0.5 Rush + Rec TDs
- DeVonta Smith Higher Than 49.5 Receiving Yards
Here is what I receive with welcome offer, depending on the outcome of the entry:
- If all of my picks win, I receive a $45 total payout ($40 profit + $5 entry back) and $100 in bonus funds or entries.
- If one or more of my picks lose, I receive $100 in bonus funds or entries.
Underdog Promo Sign-Up Steps: Thursday, October 9, 2025
Use the steps outlined below to claim your $100 bonus with the Underdog Fantasy 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 $100 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 Eagles vs. Giants Thursday Night Football.
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 operates. Terms apply. 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)" with "Must be 18+ (21+ MA & AZ, 19+ AL, NE) and present in a state where Underdog operates. subject to change. Terms apply."
