Sign up now with the Underdog Fantasy promo code TOPACTION to unlock a $50 play-and-get bonus. Place a $5 lineup using picks from any sport, including the NFL. Whether you win or lose, once your lineup settles, you get $50 in bonus cash.
Click the sign-up module or use the Underdog Fantasy promo code TOPACTION to claim your welcome bonus in any of the following states: 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, and WY.
Today marks the kickoff of the 2025 NFL season with the Dallas Cowboys facing off against the Philadelphia Eagles. Catch the action at 8:20 p.m. ET on NBC and Peacock. Use your bonus cash to submit lineups from any Week 1 game.
Don't miss your chance to grab $50 in bonus cash—use the Underdog promo code TOPACTION and get in on the Cowboys vs. Eagles game now.
Underdog Promo Code TOPACTION: Submit $5 Lineup with Cowboys vs. Eagles Picks
Now that you've claimed the Underdog Fantasy promo code TOPACTION, it's time to submit your lineup. To add a pick to your lineup, select "Higher" or "Lower" on a player's projection. An Underdog Fantasy lineup can include up to six picks.
Feel free to add picks from any game or sport. In the example below, I've focused on the Cowboys vs. Eagles game, the marquee matchup on Thursday, September 4, 2025.
My example features a three-pick lineup, which requires choosing between the Standard and Flex options. With the Standard entry, you get a 6x payout if every pick wins, but nothing if one pick loses. Alternatively, the Flex entry offers a 3x payout for a perfect lineup or a 1x payout return with a 2-for-3 lineup.
Sign up now and use the Underdog Fantasy promo code TOPACTION to claim your welcome bonus. Submit your first lineup with Cowboys vs. Eagles picks to access $50 in bonus cash.
- Saquon Barkley (Philadelphia Eagles) Higher Than 12.5 Receiving Yards
- Jake Ferguson (Dallas Cowboys) Higher Than 5.5 Targets
- Quinyon Mitchell (Philadelphia Eagles) Lower Than 3.5 Tackles + Assists
How to Sign Up for Underdog Fantasy on Thursday, September 4, 2025
Follow the steps below to claim the Underdog promo code TOPACTION and make your first deposit and lineup on Thursday:
- Step 1: Use the Underdog promo code TOPACTION sign-up module on this page to download the Underdog Fantasy 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 Fantasy account.
- Step 4: Enter the Underdog Fantasy promo code TOPACTION for a play $5, get $50 in bonus cash offer.
- Step 5: Agree to the Underdog Fantasy Terms of Use and Privacy Policy. Confirm you are at least 18 years old (19+ in Alabama/Nebraska, 21+ in Massachusetts/Arizona).
- Step 6: Click "Sign Up."
- Step 7: Make your first deposit of $10+.
- Step 8: Create your first entry at Underdog Fantasy with picks from the NFL or any other sport.
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)