By using the Polymarket promo code STIFFS during registration, new customers can take advantage of an exclusive welcome offer ahead of the MLB games today. Sign up here and get a $50 bonus after making an initial deposit of at least $20.
Once your account is funded, this bonus can be used to trade on any of today’s MLB games, as well as the Stanley Cup Final.
Polymarket Promo Code STIFFS Unlocks $50 Bonus
| Polymarket Promo Code | STIFFS |
|---|---|
| New User Offer | $50 Bonus |
| Terms and Conditions | 18+ and Present in the US |
| Date Last Verified | June 6, 2026 |
Diving deeper into the mechanics of this welcome offer, exclusively new Polymarket customers are eligible to claim the $50 sign-up bonus. With a compelling MLB slate on the schedule today—highlighted by the Atlanta Braves hosting the Pittsburgh Pirates and the Seattle Mariners taking on the Detroit Tigers—this promotion is the perfect way to build your bankroll right from the first pitch.
To successfully unlock the $50 bonus, you must be 18 or older and physically located in an eligible Polymarket state. Once your new account is created, you simply need to make an initial deposit of at least $20. After that qualifying deposit clears, the bonus funds will be credited to your account, ready to be traded on any of today’s matchups. We’re in this together, so let’s take a look at where the smart money is heading.
MLB Probabilities for Saturday
| Matchup | Probability |
|---|---|
| SEA @ DET | SEA 55.0% / DET 45.0% |
| CIN @ STL | CIN 45.9% / STL 54.1% |
| SF @ CHC | SF 44.0% / CHC 56.0% |
| PIT @ ATL | PIT 48.8% / ATL 51.2% |
| BOS @ NYY | BOS 44.7% / NYY 55.3% |
| MIL @ COL | MIL 68.4% / COL 31.6% |
If you’re looking to capitalize on today’s heaviest moneyline favorite, trading $20 on the Milwaukee Brewers would yield a profit of $8.06, returning $28.06 total. It’s a steady way to build a stack. Conversely, if you want to swing for a nice pay day and back the day’s biggest underdog, a $20 stake on the Colorado Rockies would pay out an impressive $60.60 (a $40.60 profit).
Keep in mind that you’ll be able to make trades during the action. So, you may find opportunities to
How to Sign Up with the Polymarket Promo Code
Ready to get in on today’s MLB action or chase some value on the ice? Claiming your welcome offer is a simple, straightforward process. Follow these exact steps to unlock your bonus:
- Register Your Account: Create a new account here by providing your standard personal information (such as your name, email, and date of birth).
- Verify Your Identity: Submit a valid proof of identification to ensure your account is secure and fully verified.
- Apply the Promo Code: During the registration process, make sure to enter the promo code STIFFS to opt into the offer.
- Make a Deposit: Complete the activation by making a first-time deposit of at least $20 into your new account.
Once your deposit clears, you will be completely set up and ready to start trading on any of today’s exciting matchups.
