Create a new daily fantasy sports account on Sunday, March 15, 2026 using the Underdog promo code TOPACTION to unlock $50 in fantasy bonus entries. The process is simple—play a $5 or larger entry and receive the $50 bonus to use on future lineups. New users can immediately begin building entries using NBA player projections once their account is set up. Underdog remains one of the most popular DFS apps in the U.S., with availability in the majority of states. To activate the offer, click the sign-up module below.
Underdog Fantasy offers a unique experience compared to traditional online sports betting. Instead of betting on game lines or totals, users create entries based on player performance projections. Each additional pick added to your lineup increases the payout multiplier, giving you the chance to build larger returns as you expand your entry.
For more details on where the Underdog promo code TOPACTION is currently available, review the chart below to see the eligible states where you can start playing today.
| Underdog Promo Offer | DFS States Available | Underdog Promo Code Sign-Up Link |
|---|---|---|
| Play $5, Get $50 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: Make Entry With NBA Picks Today
Register with the Underdog promo code TOPACTION, play $5 or more, and receive $50 in fantasy bonus entries that can be used on any NBA slate. Before building your lineup, it helps to understand how Underdog entries work and what payout structures are available.
Underdog offers two entry formats: Standard and Flex. A Standard entry requires every pick in your lineup to hit in order to cash, but it also provides the largest potential payout. A Flex entry is more forgiving, allowing you to miss one pick and still receive a return, though the payout is significantly smaller compared to a perfect Standard entry.
Below is an example of a $5 Standard entry featuring NBA picks, which carries a 5x payout multiplier if all selections hit.
- Shai Gilgeous-Alexander Higher Than 30.5 Points
- Jalen Brunson Higher Than 45.5 Pts + Reb + Ast
- Anthony Edwards Higher Than 26.5 Points
Here’s how the entry payout works depending on the results of your picks:
- If all picks win: You receive a $25 total payout ($20 in profit plus your $5 entry returned) along with $50in bonus entries.
- If one or more picks lose: You still receive $50 in bonus entries.
Keep in mind that the Underdog promo code TOPACTION is available to new users located in the following states: 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, and WY.
Underdog Registration Steps: Sunday, March 15, 2026
Follow the steps outlined below to claim your $50 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 the NBA today.
Underdog 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. Offer not valid in MD, MI, NJ, NY, OH, and PA. Concerned with your play? Call 1-800-MY-RESET or 1-800-GAMBLER or visit www.ncpgambling.org. NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369).
