Sign up before Monday Night Football and use Underdog promo code YAHOOBONUS to turn a $5 initial play into a $100 bonus.
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. Concerned with your play? Call 1-800-MY-RESET or 1-800-GAMBLER or visit www.ncpgambling.org; AZ: 1-800-NEXT-STEP (1-800-639-8783) or text NEXT-STEP to 53342; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369).
Underdog promo code | |
New user offer | Place a $5 entry and receive $100 in bonus funds |
Bonus type | Receive $100 after an eligible first entry of at least $5 |
Minimum deposit | $10 (all Underdog deposit methods have a $10 minimum) |
Age | 18+, rising to 19+ or 21+ in some states |
Eligible states | 40 states plus DC; check the in-app list |
Information verified on | October 19, 2026 |
Underdog promo code terms
New customers only: 18+ in most states, 19+ or 21+ in others. Check your state.
Minimum deposit: $10 is the minimum deposit for all Underdog deposit methods.
Match rate: an initial play of $5 returns $100 in bonus funds.
Bonus funds: not withdrawable, and subject to a playthrough requirement.
Underdog Predict: a separate prediction market with its own state list.
How to claim Underdog promo code YAHOOBONUS
Click through from this page to Underdog.
Register an account and enter the promo code YAHOOBONUS where asked (although it will likely populate automatically from a link on this page).
Complete verification prior to your first entry.
Deposit at least $10.
Build your first pick’em entry on Washington vs. San Francisco.
Three Underdog picks for Monday
Player | Projection | My pick |
Mike Evans, SF | Anytime Touchdown | Yes |
Jayden Daniels, WAS | 199.5 Pass Yards | Higher |
Christian McCaffrey, SF | 39.5 Receiving Yards | Lower |
Evans has shown real chemistry with Brock Purdy throughout the season (especially last week), and those two will connect in the endzone again to keep the good times rolling. McCaffrey won’t have to be an essential part of the passing game in this one, so don’t expect Kyle Shanahan to overwork him in the aerial attack. My expectation is San Francisco leads by two scores, so Daniels goes over his total with easy late-game completions.
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. Concerned with your play? Call 1-800-MY-RESET or 1-800-GAMBLER or visit www.ncpgambling.org; AZ: 1-800-NEXT-STEP (1-800-639-8783) or text NEXT-STEP to 53342; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369).
Underdog promo code FAQ
Can I withdraw the $100 in bonus funds I get with Underdog Fantasy?
No. The bonus funds must be used in a contest on the platform to be withdrawn.
How big a deposit do I need?
$10 is the minimum deposit that can be placed with Underdog, including for first deposits.
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