Redeem the Underdog promo code WTOP and start with a $5 MLB pick to secure a $100 fantasy bonus.
Underdog Promo Code WTOP: Start With $100 Fantasy Bonus
| Underdog Promo Code | WTOP |
| New User Offer | Play $5, Get $100 Bonus |
| In-App Promotions | 30% Profit Boost All October, 30% MLB Profit Boost, Ladders, etc. |
| Terms and Conditions | 18+ and Present in Participating States |
| Bonus Last Verified On | October 15, 2025 |
| Information Confirmed By | WTOP |
This is a guaranteed way for all new users to receive a welcome bonus on Underdog. All you need to do is sign up and play a $5 entry on the ALCS tonight, NLCS & TNF tomorrow, or any other sport,. which is all it takes to secure $100 in fantasy bonuses.
Some new users will receive $100 in bonus funds to use in a variety of ways. Others will get 10 $10 bonus entries to use throughout the week.
NFL TNF Ladder Potentials on Underdog
One fun promotion that Underdog has is a “ladders” type of promotion. A ladder play is essentially taking a player prop you like, but instead of taking the players main line you can take that player to climb multiple ladders of his prop.
For example, superstar WR Ja’Marr Chase has his receiving yards prop set at 72.5. That said, if you think he has a chance to go for 100+, you can opt for the ladder promotion on Underdog and receive a higher payout based on how many yards Chase ends up getting.
A minimum of three players must be put into this promotion, and you will only get paid out based on the lowest leg of the ladder all three players manage to hit.
Along with Chase, DK Metcalf receiving yards and Jaylen Warren rushing yards are two additional ladder opportunities for Thursday Night Football.
How to Redeem Underdog Promo Code WTOP
Signing up with Underdog is a quick and stress-free process. Create a new account in a matter of minutes by following the simple steps below:
- Use the links on this page to head to Underdog and get in on the action. Make sure to input promo code WTOP to qualify for this offer.
- Answer the necessary information sections to set up a new profile.
- Deposit at least $10 in cash using online banking, PayPal, credit/debit card, Apple Pay, etc.
- Start with a $5 pick on the MLB Postseason, NHL, NBA preseason, NFL or any other market.
- This will unlock a $100 bonus no matter what happens to the original pick.