When you register for a new DFS account today using the Underdog promo code TOPACTION, play $5+ and get $100 in bonus funds or entries. This sign-up offer is uniquely structured, providing one bonus format or the other based on a 50-50 random draw. Get started today with the Underdog Fantasy promo code TOPACTION and place entries containing picks from today's Sports Equinox.
Today represents the rare time where the NBA, NFL, MLB, and NHL are all in action on the same day. Use picks from Commanders vs. Chiefs on Monday Night Football, Blue Jays vs. Dodgers in Game 3 of the World Series, or any other sport today at Underdog.
The Underdog promo code TOPACTION is available to new users exclusively. Underdog Fantasy is legal in a majority of U.S. states, including many of those that do not have legal online sports betting yet. This makes the DFS app an excellent alternative to the top online sportsbooks today. Check out the chart below for the list of states and the sign-up link to use to claim the welcome offer today.
| Underdog Promo Offer | DFS States Available | Underdog Promo Code Sign-Up Link |
|---|---|---|
| Play $5, Get $100 in Bonus Funds or Entries | 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: Get $100 Bonus for Sports Equinox Entries
Sign up with the Underdog promo code TOPACTION today and play $5+ to get $100 in bonus funds or $100 in entries. Use your bonus to create entries on the Sports Equinox today, which features Monday Night Football, the World Series, and both NBA and NHL regular season action. Let's explore how the Underdog Fantasy promo code TOPACTION works and how to play your first entry on the platform.
With the welcome offer, you have a 50% chance at getting $100 in bonus funds and a 50% chance at getting $100 in entries. The entries are broken down into 10 individual increments. If you get the $100 in bonus funds, they can be utilized to play draft contests or create entries.
There are two different entry formats available at Underdog Fantasy: Standard and Flex. A Standard entry requires all of your picks to win to receive a payout, while a Flex entry requires you to win all picks or lose just one. The key difference is that a Flex entry provides a much smaller payout for going perfect, so a Standard entry rewards you much more for the risk you take.
Here is an example of an entry I created for today's Sports Equinox:
- Rashee Rice Higher Than 67.5 Receiving Yards
- Shohei Ohtani Higher Than 2.5 Total Bases
- Stephen Curry Higher Than 26.5 Points
Suppose I place this entry as my $5 initial entry with the Underdog promo code TOPACTION, which has a 6.3x payout multiplier. Here is what I receive based on the outcome of it:
- If all of my picks win, I receive a $31.50 total payout ($26.50 profit + $5 entry back) and $100 in bonus funds or entries.
- If one or more of my picks lose, I receive $100 in bonus funds or entries.
Underdog Fantasy Promo Code Sign-Up Steps: Monday, October 27, 2025
Use the steps outlined below to claim your $100 bonus with the Underdog Fantasy 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 $100 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 Sports Equinox.
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. 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).
