Get up to $1,000 in bonus cash today with the Underdog promo code TOPACTION. Use the bonus cash towards the 2025 MLB Home Run Derby tonight at 8 p.m. ET at Truist Park in Atlanta or any game you prefer. Apply the Underdog promo code TOPACTION now during account registration and get a deposit match, up to $1,000 in bonus cash, a $50 bonus, or combo offer to use on any event today, including the 2025 MLB Home Run Derby. Click the sign-up link below of your preferred offer, which varies depending on your state:
Underdog Fantasy provides a few different options for MLB picks today. Once you claim one of the welcome bonus offers, set your Home Run Derby entry with predictions on Round 1 home runs hit, longest home run distance, or Round 1 finishing position. While Cal Raleigh and Oneil Cruz lead the projected First Round home runs at 21.5, choose from eight batters in the Home Run Derby today.
Use the chart below or any sign-up module on this page to register with the Underdog promo code TOPACTION before the 2025 MLB Home Run Derby at 8 p.m. ET.
Underdog Promo Code TOPACTION Details
Click the Underdog promo code below to claim your sign-up bonus, the promo code Reddit users should choose before the MLB Home Run Derby today, July 14, 2025.
| Underdog Fantasy | Underdog Fantasy Sign-Up Bonus | Available States |
|---|---|---|
| Underdog promo code TOPACTION | 50% Deposit Match, up to $1,000 in Bonus Cash | AK, AR, DC, FL, IL, IN, KS, ME, MS, NE, NM, NY, NC, ND, OK, OR, RI, SC, SD, TX, VT, VA, WI, WY |
| Underdog promo code TOPACTION | Play $5, Get $50 Bonus | AL, MN |
| Underdog promo code TOPACTION | 50% Deposit Match, up to $1,000 in Bonus Cash AND Play $5, Get $50 Bonus | GA, UT |
Underdog Promo Code TOPACTION: Create First Entry on 2025 MLB Home Run Derby
Across most states, use the Underdog promo code TOPACTION and get a 50% match on your first deposit, up to $1,000 in bonus cash. The deposit match has a 1x play-through requirement, so if you deposit $100 and receive $50 in bonus cash, you need to play $50 in cash within 14 days to avoid expiration.
Alternatively, in AL and MN, play $5 on any entry today including picks from the first round of the MLB Home Run Derby. Make player picks to perform higher or lower than their listed statistic, include two to eight players, make sure players from multiple teams are selected, and lock in your entry for $5 or more. You get $50 in bonus cash to play within Underdog Fantasy.
Lastly, for those in GA and UT, you actually get both offers when you register with the Underdog promo code TOPACTION now.
Underdog Fantasy Sign-Up Process
Here's how to register with the Underdog promo code TOPACTION now:
- Click on one of the sign-up modules above or links in this article to download the Underdog Fantasy app.
- Double check that the Underdog promo code TOPACTION is in the appropriate field.
- Enter your personal identifying information such as your name, email address, and date of birth. Also create your Underdog Fantasy account’s username and password.
- Agree to the Underdog Fantasy terms and conditions and privacy policy.
- Make your first deposit of $10+ into your account with one of the banking methods at your disposal.
- Submit your first player pick ‘em entry on the Home Run Derby tonight, or any game.
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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.