Underdog Promo Code YAHOOBONUS: Play Keep Your Million + 50% Deposit Match up to $1000 in Bonus Funds for NFL Sunday

Sign up for Underdog and use promo code YAHOOBONUS for a pair of bonus benefits: A 50% match on your first deposit, worth up to $1,000 in bonus funds, and Keep Your Million, a free-to-play survival game.

Underdog Fantasy Deposit Match Promo — Claim a 50% deposit match with code YAHOOBONUS + play Keep Your Million

18+ (19+ in AL, CO, NE; 21+ in AZ, IA, IL, LA, MA, and VA). Play Responsibly. Void where prohibited. 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 1-877-8-HOPENY or text HOPENY (467369); MA: 1-800-327-5050; CT: (888) 789-7777 or visit ccpg.org; MO: 1-888-BETSOFF (1-800-238-7633); IA: 1-800-BETS-OFF; LA: 1-877-770-7867; IN: 1-800-9-WITH-IT (1-800-994-8448); TN: call or text REDLINE: 800-889-9789; VA: 1-888-532-3500.

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Underdog promo code	YAHOOBONUS
New user offer	50% deposit match up to $1,000 + Keep Your Million
Bonus type	Deposit match, paid in bonus funds
Minimum deposit	$10
Deposit needed for the cap	$2,000
Age	18+, rising to 19+ or 21+ in some states
Eligible states	40 states plus DC; check the in-app list
Information verified on	September 26, 2026

How Keep Your Million works

Eligible users begin with a pot of virtual bonus funds totaling $1,000,000.
Each round asks a higher or lower question on a player projection.
Your whole remaining pot must be split between the two sides in each round.
The winning selection carries into the next round, for up to 20 rounds.
The surviving balance after all 20 rounds is awarded as Underdog bonus funds.

New customers only: 18+ in most states, 19+ or 21+ in others. Check your state.
Minimum deposit: $10 to unlock the match and activate the game.
Match rate: 50% of the first deposit. A $100 deposit returns $50; $2,000 deposit required for $1,000 maximum match.
Bonus funds: not withdrawable, and subject to a playthrough requirement.
Keep Your Million: free to play, with a virtual pot. No deposit is needed to enter.
Underdog Predict: a separate prediction market with its own state list.

Click through from this page to Underdog.
Register an account and enter promo code YAHOOBONUS.
Complete verification to unlock Keep Your Million.
Deposit at least $10 to trigger the 50% match.
Build your first pick’em entry from the Sunday schedule.

Three Underdog picks for Sunday

Player	Projection	Our pick
James Cook, BUF	0.5 Rush + Receiving TDs	Higher
Jahmyr Gibbs, DET	0.5 Rush + Receiving TDs	Higher
C.J. Stroud	243.5 Pass Yards	Lower

The Bills know they need to keep Josh Allen’s wingman happy, so expect to see Cook get red zone touches this week. Detroit has been riding Gibbs through two weeks, no reason to think that stops. Stroud has been solid throwing the ball, but the Texans are 0-2. Watch for a conservative gameplan built on defense and rushing that could keep Stroud under his yardage total.

Can I win $1,000,000 in cash?

No. The Keep Your Million pot is virtual. Any surviving balance is awarded as Underdog bonus funds, not withdrawable cash until meeting playthrough requirements.

How big a deposit do I need?

$10 is the minimum. The match is 50%, so a $2,000 deposit is required to receive the full $1,000 in matching bonus funds.

This page contains affiliate links. A commission or other compensation may be earned when you click through.