New Polymarket customers looking to capitalize on the NBA Postseason can unlock a $50 sign-up bonus after making an initial deposit of at least $20 by using a valid Polymarket promo code STIFFS.

This welcome offer is perfectly timed for today’s critical playoff matchup between the New York Knicks and the Cleveland Cavaliers at Madison Square Garden. Whether you are forecasting the outcome of this specific Knicks-Cavaliers clash or predicting results for any other NBA playoff games throughout this week’s postseason slate, this introductory bonus provides valuable early leverage before the action tips off on the court.

Polymarket Promo Code Offer Overview

First-time users have a prime opportunity to build their bankroll during the NBA Postseason. By claiming this promotion, new Polymarket customers secure a $50 sign-up bonus to use on predictions for the highly anticipated playoff showdown between New York and Cleveland. Whether you back the hometown Knicks or the visiting Cavaliers, this bonus delivers extra capital to kickstart your forecasting strategy.

To unlock the funds, eligible new Polymarket customers must register and make an initial deposit of at least $20. This promotion is strictly reserved for brand-new users creating their first account. Additionally, all participants must be 18 years of age or older and physically located in an eligible Polymarket state to successfully claim the $50 sign-up bonus.

Use Polymarket NBA Promo Today on Knicks vs Cavaliers

Using your $50 Polymarket bonus on the moneyline provides a direct path to building your bankroll. If you trade that $50 on the heavily favored New York Knicks (-232), a successful prediction yields a profit of $21.55. Alternatively, if you project the underdog Cleveland Cavaliers (+191) to pull off the road victory, placing your $50 on Cleveland returns a hefty $95.50 in profit.

When analyzing the 2025 Postseason statistics to identify the smarter play, New York presents a compelling, data-backed case. The Knicks boast a dominant Net Rate (estimated points scored minus points allowed per 100 possessions) of 18.6, significantly outpacing Cleveland’s Net Rate of just 1.9. Furthermore, New York has controlled the glass much more effectively throughout the postseason, grabbing 55.9% of all available rebounds. The Cavaliers trail behind with a Total Rebound Percentage of 50.5%. These metrics underscore the Knicks’ two-way efficiency and rebounding superiority heading into this crucial matchup.

How to Activate Your Polymarket Promo Code

Securing your $50 welcome bonus ahead of tonight’s New York Knicks vs. Cleveland Cavaliers game is a straightforward process. Follow these exact steps to ensure your account is properly configured and funded before the action begins at Madison Square Garden:

  1. Download the App: Navigate to your device’s app store and download the official Polymarket app.
  2. Create Your Account: Open the app to begin registration. You will need to set up a new account by providing standard personal information (such as your name, date of birth, and email address).
  3. Verify Your Identity: To comply with platform regulations, submit the required proof of identification to verify your new account.
  4. Enter the Promo Code: During the registration flow, explicitly enter the promo code STIFFS when prompted.
  5. Make Your First Deposit: Navigate to the cashier section and complete a first-time deposit of at least $20 to successfully activate the offer.

Once your deposit clears and your account is verified, your $50 bonus will be active and ready to deploy on your Knicks-Cavaliers predictions or any other available NBA markets.