Create a new daily fantasy sports account today with the Underdog promo code TOPACTION to claim $75 in fantasy bonus entries. Simply register and play $5+ at Underdog to secure your $75 bonus. Get started now with an initial entry comprised of picks on tonight's NBA slate which kicks off at 7 p.m. ET. To claim your welcome bonus with the Underdog promo code TOPACTION today, click on the sign-up module below.
Underdog is one of the top DFS operators on the market right now and the Underdog promo code TOPACTION represents the best way to get started today. Underdog is legal in a majority of U.S. states, which naturally makes it an extraordinary alternative to online sports betting, particularly in the states where it is not legal yet. To learn more about one of the best alternatives to the top NBA betting promos today, check out the chart below.
| Underdog Promo Offer | DFS States Available | Underdog Promo Code Sign-Up Link |
|---|---|---|
| Play $5, Get $75 in Fantasy Bonus Entries | AL, AK, AR, CA, 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: Get $75 in Fantasy Bonus Entries for NBA Today
Sign up with the Underdog promo code TOPACTION today to secure $75 in fantasy bonus entries when you play $5+ on the app. Get started with an initial entry containing picks on tonight's NBA games. Let's take an in-depth look at how entries work at Underdog to give you a better understanding of how to work through the welcome offer.
At Underdog, there are two different types of entries to choose from: Standard and Flex. A Standard entry requires all of your picks to win to receive a payout, while a Flex entry requires you to win all picks or lose just one. The key difference is that a Flex entry provides a much smaller payout when you win all of your picks, while a Standard entry rewards you much more for the risk you take.
Here is an example of an entry I created for tonight's NBA games:
- Luka Doncic Higher Than 34.5 Points
- Donovan Mitchell Lower Than 29.5 Points
- Stephen Curry Higher Than 5.5 Assists
Suppose I place this entry as my $5 initial entry with the Underdog promo code TOPACTION, which has a 6x payout multiplier. Here is what I receive based on the outcome of it:
- If all of my picks win, I receive a $30 total payout ($25 profit + $5 entry back) and $75 in bonus entries.
- If one or more of my picks lose, I receive $75 in bonus entries.
Underdog Fantasy Promo Code Sign-Up Steps: Wednesday, January 28, 2026
Follow the steps outlined below to claim your $75 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 $75 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 NBA games today.
Underdog Promo Code TOPACTION: Terms & Conditions
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, NJ, 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).
