New customers can use Polymarket promo code STIFFS to secure a $50 sign-up bonus after making an initial deposit of at least $20. Click here to start the registration process.
By utilizing this offer, you can take full advantage of this welcome offer ahead of tip-off. The NBA Finals will begin on Wednesday, but there are options in MLB on Monday. This exclusive sign-up bonus can be seamlessly applied to this crucial Spurs-Knicks clash, any NBA game this week, or even active prediction markets across the NHL and MLB.
Polymarket Promo Code STIFFS Unlocks $50 Bonus
| Polymarket Promo Code | STIFFS |
|---|---|
| New User Offer | $50 sign-up bonus |
| Terms and Conditions | 18+ and Present in the US |
| Bonus Last Verified On | June 2, 2026 |
Exclusive to new Polymarket customers, this sign-up offer provides an excellent opportunity to enter the prediction market for the San Antonio Spurs vs. New York Knicks postseason series. By creating a new account and making a qualifying initial deposit of at least $20, users automatically unlock a $50 sign-up bonus to use on their market forecasts.
To qualify for the promotion, participants must be 18 years of age or older and physically located in an eligible Polymarket state. Once your account is verified and the minimum deposit requirement is met, the $50 bonus is credited directly to your account. This provides immediate flexibility to acquire shares on the Spurs or Knicks, as well as opportunities in other major sports markets like the NHL and MLB.
Spurs vs. Knicks Game 1 Probabilities
| Team | Probability |
|---|---|
| San Antonio Spurs | 64% |
| New York Knicks | 37% |
Despite the market probabilities leaning toward San Antonio, the Knicks remain a formidable threat in this series. New York has consistently proven its ability to compete at a high level, offering compelling underdog value for those looking to maximize their promotional bonus on the platform. New York is entering Game 1 after a lengthy rest. The Knicks swept the Cleveland Cavaliers in a dominant Eastern Conference Finals performance. Meanwhile, the Spurs are entering the NBA Finals with the momentum of beating the defending champions. We expect to see a close NBA Finals.
How to Activate Polymarket Promo Code STIFFS
Getting started and claiming your $50 welcome bonus is a straightforward process. If you are ready to trade shares on either the Spurs or the Knicks during this postseason clash, follow these exact steps to activate your offer:
- Register an Account: Click here and create a new account by entering standard personal information, including your name, email address, and date of birth.
- Verify Your Identity: Provide the required proof of identification to ensure your account is secure and compliant with local regulations.
- Apply the Promo Code: When prompted during the registration process, enter the Polymarket promo code STIFFS to opt into the welcome offer.
- Make a Qualifying Deposit: Complete a first-time deposit of at least $20 into your newly created account.
Once these steps are successfully completed and your initial deposit clears, your $50 sign-up bonus will be activated and ready to deploy across the NBA postseason, NHL, or MLB prediction markets.
