Check out the Underdog promo code, TOPACTION, and unlock up to $1,000 in bonus cash today. To claim your sign-up bonus, simply click on the Underdog promo code TOPACTION relevant to your state. You can use your bonus to create a lineup with picks from the NFL, MLB, or any sport.
By using the Underdog promo code TOPACTION, you can access a 50% deposit match, up to $1,000 in bonus cash, in the following states: AK, AR, FL, IL, IN, KS, ME, MS, NE, NM, NY, NC, ND, OK, OR, RI, SC, SD, TX, VT, VA, WI, WY, and DC. Deposit at least $2,000 to unlock the full $1,000 bonus today.
If you're playing in Alabama or Minnesota, you're eligible for a $50 play-and-get promo with the Underdog promo code TOPACTION. Sign up now, place a $5 lineup using picks from any sport, and get $50 in bonus cash, regardless of the lineup outcome.
Players in Georgia and Utah can apply the Underdog promo code TOPACTION to claim both the 50% deposit match and the $50 play-and-get promo.
Underdog Promo Code TOPACTION: Submit NFL and MLB Lineup Today
Head over to the Underdog Fantasy daily fantasy sports app to explore player projections for sports like the NFL and MLB. Begin by selecting "Higher" or "Lower" on a player projection to add a pick to your lineup. Your lineup can include up to six picks.
For example, in a three-pick lineup consisting of NFL and MLB picks, you must choose between a Standard or Flex entry. With the Standard entry, you get a 6x payout if all your picks win; however, one incorrect pick results in no payout. If you opt for the Flex entry, a perfect lineup yields a 3x payout, while having two correct picks out of three provides a 1x payout.
Sign up now and use the Underdog promo code TOPACTION to claim your welcome bonus. Submit a lineup using players from any sport, including the NFL and MLB.
- Shedeur Sanders (Cleveland Browns) Higher Than 123.5 Passing Yards
- DeMario Douglas (New England Patriots) Lower Than 16.5 Receiving Yards
- Juan Soto (New York Mets) Higher Than 1.5 Hits+Runs+RBIs
How to Sign Up for Underdog Fantasy on Friday, August 8, 2025
Follow the steps below to claim the Underdog promo code TOPACTION and make your first deposit and lineup on Friday:
- Step 1: Click this link or any 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 to get up to $1,000 in bonus cash from the 50% deposit match welcome offer or a play $5, get $50 in bonus funds 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+. It is matched at a 50% rate, up to $1,000 in bonus cash.
- Step 8: Create your first entry at Underdog Fantasy with picks from the NFL, MLB, or any other sport.
Must be 18+ (19+ or 21+ depending on state of residence) and within applicable state. Full T&Cs apply.
Must be 18+ (19+ in AL) and present in Minnesota or Alabama. Terms apply. See https://assets.underdogfantasy.com/web/play_get.html for details. Concerned with your play? Call 1-800-GAMBLER or visit www.ncpgambling.org.
Must be 18+ and present in Georgia or Utah. Terms apply. See underdogfantasy.com/web/deposit-match-terms and https://assets.underdogfantasy.com/web/play_get.html for details. Concerned with your play? Call 1-800-GAMBLER or visit www.ncpgambling.org.