Now is an excellent time to sign up with the Action Network Underdog promo code TOPACTION and claim a $75 welcome bonus with a big slate of sporting events on hand tonight. Underdog issues new users $75 in fantasy bonus entries once you submit a $5+ DFS pick 'em entry on any sport.
Make your first entry on NBA picks of games like the Thunder vs. Pistons at 7:30 p.m. ET on ESPN, or Celtics vs. Nuggets at 10 p.m. ET on ESPN. If you're not a fan of the NBA, Underdog offers NHL and college basketball pick 'em markets. Click the module above or link in the table below to register at Underdog today, Wednesday, Feb. 25, 2026.
| Underdog Promo Code | Underdog Sign-Up Bonus | Underdog States Available |
| Underdog Promo Code TOPACTION | 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 |
Underdog Promo Code TOPACTION: Place Thunder vs. Pistons, Celtics vs. Nuggets Predictions Today
I encourage you apply the Underdog promo code TOPACTION welcome offer to the NBA tonight. DFS offers player projections for you to pick "More" or "Less" on, and no sport has a better collection of superstar athletes than the NBA.
Take a look at the table below to see what an Underdog pick 'em entry looks like. Use these Thunder vs. Pistons predictions or Celtics vs. Nuggets predictions, or make any of your own selections on Underdog.
| Player | Team | Pick |
| Cade Cunningham | Detroit Pistons | Lower than 25.5 points |
| Cason Wallace | Oklahoma City Thunder | Lower than 11.5 points |
| Derrick White | Boston Celtics | Higher than 5.5 assists |
| Nikola Jokic | Denver Nuggets | Higher than 27.5 points |
- Receive 10x when you copy my 4-pick NBA DFS lineup today and get all four picks correct on a Standard entry.
- Win 6x when you use my NBA DFS lineup above and get each prediction right on a Flex entry. This entry type also pays out 1.5x if three of the four picks hit.
Still haven't redeemed this Underdog sign-up bonus? Read why fellow Action DFS expert Daniel Preciado is an advocate for the Underdog promo code TOPACTION:
"A generous $75 welcome bonus is up for grabs for anyone without an Underdog account , and all it takes is to sign up with promo code TOPACTION. At a low buy-in of a $5 entry, what do you have to lose in comparison to what you gain?"
Underdog Sign-Up Steps
Here is the process to register with the Action Network Underdog promo code TOPACTION:
- Download the Underdog mobile app on your device through this link.
- Set up your new DFS account with an available username and qualifying password.
- Type in your date of birth, email address, and rest of your personal identifying information.
- Enter the Underdog promo code TOPACTION to claim the $75 welcome bonus.
- Agree to the privacy policy and T&Cs. You must be at least 18 years old (19+ in Alabama/Nebraska, 21+ in Massachusetts/Arizona) to play.
- Click "Sign Up" to complete registration with Underdog.
- Make a $10+ first deposit into your new DFS account.
- Create an Underdog pick 'em entry and submit $5+ on it to get $75 in fantasy bonus entries.
Underdog Promotions for Returning Customers
The Underdog promo code TOPACTION gets your foot in the door with their $75 new user bonus. Outside of this, players have other promotions to opt-into and enhance their overall experience. Here are the top Underdog promotions for existing users today:
- 50% NBA Profit Boost: Make an NBA Underdog pick 'em entry between three and eight picks. Boost your winnings by 50% on an entry, up to $50 in value.
- 30% NHL Boost: Increase your profits on an NHL pick 'em entry this evening, up to $50.
- Refer A Friend: Receive $10 in bonuses evert time you refer someone to Underdog and they make a qualifying deposit.
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).
