When you register for a new DFS account with the Underdog promo code TOPACTION, play a $5+ entry to get back a $50 bonus regardless of the outcome of your entry. Underdog Fantasy is one of the top alternative options to online sports betting available today. Sign up now with the Underdog Fantasy promo code TOPACTION and play your first entry containing picks from NFL preseason games, including Steelers vs. Panthers at 7 p.m. ET and Patriots vs. Giants at 8 p.m. ET on Thursday.
To claim your alternative to the best NFL betting promos with the Underdog promo code TOPACTION, click on the sign-up module below.
| Underdog Fantasy Promo | States Available | Underdog Promo Code Sign-Up Link |
|---|---|---|
| Play $5, Get $50 | 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, WY | TOPACTION |
Underdog Promo Code TOPACTION: Play $5+ Entry on NFL Preseason Games Today
Sign up now with the Underdog Fantasy promo code TOPACTION and play a $5+ initial entry to get a $50 bonus, guaranteed. This bonus is distributed into your bonus cash balance which is entirely separate from your deposited cash balance. Use this bonus to play entries containing picks on your favorite players from across the sports world or enter into draft contests available at Underdog Fantasy.
Let's discuss how this sign-up offer works, along with how to play your first entry. At Underdog Fantasy, there are two different formats to choose from to place your initial entry: Standard and Flex. A Standard entry requires all of your selections to win to receive the largest potential payout. If you elect to place a Flex entry, you receive a much smaller payout for going perfect and an even smaller payout than that if you lose just one pick.
Here is a look at an example of an entry I placed that contains picks from Thursday NFL preseason games, including Steelers vs. Panthers and Patriots vs. Giants:
- Trevor Etienne HIGHER than 25.5 Rushing Yards
- Jaxson Dart HIGHER than 114.5 Passing Yards
- Drake Maye LOWER than 105.5 Passing Yards
Suppose I place the entry above as my $5 initial entry with the Underdog promo code TOPACTION as a Standard. This entry has a 5x payout multiplier.
- If all picks win, I receive a $25 total payout ($20 profit + $5 entry returned to my account) and $50 in bonus cash.
- If one or more picks lose, I receive $50 in bonus cash only.
Remember to utilize the Underdog Fantasy promo code TOPACTION when you register to claim your $50 bonus offer now.
Steps to Claim Your Underdog Fantasy Promo: Wednesday, August 20, 2025
Use the steps outlined below to claim your $50 play-through 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 any sport, including NFL.
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)