Create a new DFS account using the Underdog promo code TOPACTION to unlock one of the best welcome offers available. Place a $5 or larger entry on Underdog, and you’ll receive $75 in fantasy bonus entries that can be used on any market — including today's remaining NFL Conference Championship games: Patriots vs. Broncos and Rams vs. Bears.
Underdog has quickly emerged as one of the most popular DFS platforms in the country, and the Underdog promo code TOPACTION provides an easy way for new users to get started. Available in most U.S. states, Underdog is a strong alternative to traditional NFL betting promos — especially in areas where online sports betting isn't yet available. For a full breakdown of today’s top DFS offers for NFL picks, refer to 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: Claim $75 in Fantasy Bonus Entries for NFL Conference Championship Games
With two NFL Playoff games set for this weekend’s Conference Championship round, now is the perfect time to take advantage of the Underdog promo code TOPACTION. Create a new account, submit a $5 or larger entry, and receive $75 in fantasy bonus entries — win or lose on your first lineup. Below, we’ll explain how Underdog entries work so you can maximize the value of the welcome offer.
Below is a sample entry built for the NFL Conference Championship games, featuring picks from Patriots vs. Broncos and Rams vs. Seahawks.
- Rhamondre Stevenson Higher Than 63.5 Rush Yards
- Jaxon Smith-Njigba Higher Than 72.5 Receiving Yards
- Puka Nacua Higher Than 52.5 Receiving Yards
On Underdog, you can choose between two entry formats: Standard and Flex. A Standard entry pays out only if every pick hits, but it offers higher multipliers. A Flex entry provides more forgiveness, allowing you to miss one pick and still earn a payout, though the multipliers are lower when all picks hit.
A three-pick Standard entry pays 6x your stake if all three projections hit. Choose the Flex option instead, and a perfect lineup returns 3x, while even one missed pick still pays 1x — adding an extra layer of protection.
Underdog Promo Code Registration Steps: Sunday, January 25, 2026
Follow the steps below to unlock your $75 bonus with the Underdog promo code TOPACTION:
- Click this link or any sign-up module to download the Underdog Fantasy app.
- Create a new account by selecting a username and password.
- Enter your email, date of birth, and any other required personal details to complete registration.
- Confirm the Underdog promo code TOPACTION is applied, then submit a $5+ entry to trigger the $75 bonus.
- Accept Underdog’s Terms of Use and Privacy Policy to continue.
- Tap Sign Up to finalize your account.
- Deposit $10 or more to unlock full access to the platform.
- Build your first Underdog entry using NFL Conference Championship picks from Patriots vs. Broncos and Rams vs. Seahawks, and start playing.
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 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).
