Sign up for Underdog on Tuesday 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 and entry into Keep Your Million, a free-to-play survival game.

Click the image above, and the Underdog promo code YAHOOBONUS will be automatically applied at sign-up.

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

YAHOOBONUS

New user offer

50% deposit match up to $1,000 + entry into Keep Your Million contest

Bonus type

Deposit match, paid in bonus funds + free contest entry

Minimum deposit

$10

Deposit needed for the cap

$2,000

Age

18+ in most states, rising to 19+ or 21+ in some states

Eligible states

40 states plus DC; check the in-app list

Information verified on

September 29, 2026

Underdog promo code terms

  • 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, subject to a 1x 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.

How the Keep Your Million contest works at Underdog Fantasy

  • Eligible users begin with a pot of virtual bonus funds totalling $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.

How to claim Underdog promo code YAHOOBONUS

  1. Click through from this page to Underdog.

  2. Register an account and enter promo code YAHOOBONUS.

  3. Complete verification to unlock Keep Your Million.

  4. Deposit at least $10 to trigger the 50% match.

  5. Build your first pick’em entry from the Tuesday MLB schedule.

Three Underdog picks for Tuesday

Underdog DFS runs on a straightforward concept that is both challenging and fun. You are given player stat projections, and you simply choose if you think the player will end up higher or lower in that stat by the end of the game.

If you sign up for an Underdog account on Tuesday, here are my favorite picks for the day:

Player

Projection

My pick

Cam Schlittler, NYY

7.5 Strikeouts

Higher 

Wilson Contreras, BOS

1.5 Hits + Runs + RBIs

Lower

Pete Crow-Armstrong, CHC

1.5 Hits + Runs + RBIs

Higher

Is there any ace that has earned more trust during this regular season than Cam Schlittler? No. Watch out for a big playoff debut and if he’s piling up strikeouts, that directly correlates to a hard night for Wilson Contreras.

Similarly, Pete Crow-Armstrong earned his reputation this year. He is the MVP frontrunner for a reason, and he will be heard from on Tuesday.

Click the image above, and the Underdog promo code YAHOOBONUS will be automatically applied at sign-up.

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 win $1,000,000 in cash from Underdog’s Keep Your Million contest?

No. The Keep Your Million pot is virtual. Any surviving balance is awarded as Underdog bonus funds, not withdrawable cash. You do have to use the funds on other picks at least once before you can withdraw.

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 at Underdog Fantasy.

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