Friday’s NBA WCF slate features Thunder vs. Spurs at 8:30 p.m. ET on NBC (Game 3), giving users another major postseason matchup to trade across the best NBA prediction market promos available today. Before tip-off, new users can compare welcome offers from platforms like Polymarket, Kalshi, Novig, and ProphetX.
These platforms are among the best NBA prediction market promos currently available for playoff users. Combined, the offers below provide over $200 in bonus value. These bonuses can be used across NBA Playoffs prediction markets, including Thunder vs. Spurs Game 3.
Click the sign-up modules below to register with the best prediction markets in 2026 before Friday’s Western Conference Finals matchup begins. With the series shifting to San Antonio, Game 3 could create major movement across NBA game winner markets, series prices, NBA Finals futures, and live prediction contracts.
Best NBA Prediction Market Promos
| Prediction Market Promos | Promo Code |
|---|---|
| Polymarket – Deposit $20 to get a $50 bonus | LABS |
| Kalshi – Trade $10, Get a $10 Bonus | LABS |
| Novig – Spend $5, Get $50 in Novig Coins | BCLABS |
| ProphetX – Get a 20% Purchase Match, up to $100 in Bonus Funds | LABS100 |
NBA Playoffs Schedule, How to Watch
The NBA Western Conference Finals continue Friday, May 22, 2026, with Thunder vs. Spurs Game 3 airing nationally on NBC.
- Thunder vs. Spurs Game 3 — 8:30 p.m. ET on NBC (Friday, May 22, 2026)
Oklahoma City and San Antonio now move into one of the most important games of the series. The Thunder bring elite shot creation behind Shai Gilgeous-Alexander. Meanwhile the Spurs continue leaning on Victor Wembanyama’s two-way impact and home-court energy.
With the WCF shifting to San Antonio, users can track every major playoff moment while trading on NBA prediction market apps throughout the evening.
Top Prediction Market App Bonuses for NBA Playoffs
Users can combine sign-up offers from multiple platforms for over $200 in total bonus value across the best NBA prediction market apps available today
Polymarket is One of the Best NBA Prediction Market Promos for Thunder vs. Spurs
If you want access to flexible NBA prediction markets, use the Polymarket promo code LABS. The invite code allows users to bypass the platform waitlist while also unlocking a $50 bonus after making a qualifying $20 deposit.
That bonus can immediately be used on Thunder vs. Spurs Game 3, Western Conference Finals markets, NBA Finals futures, or any other active NBA Playoffs contract available on the platform. Polymarket remains a strong alternative to sportsbooks for users who aren’t located in a sports betting state.
Kalshi Promo Code LABS Delivers $10 Bonus for Thunder vs. Spurs
Kalshi delivers one of the best NBA prediction market promos, largely because of their simple new-user offer. Register with the Kalshi promo code LABS and complete $10 worth of trades today to receive a $10 bonus.
Users can apply the bonus toward markets tied to Thunder vs. Spurs Game 3, NBA futures, player-based outcomes, and additional live playoff contracts. Kalshi gives users a prediction market alternative to traditional betting, with prices moving as news, injuries, and market sentiment shift throughout the day.
Trade on Thunder vs. Spurs NBA Markets with Novig Promo Code BCLABS
Novig continues gaining attention among NBA prediction market promos. That is because of its sweepstakes-style system built around Novig Cash and Novig Coins. Right now, users can spend $5 and receive $50 in Novig Coins after signing up with Novig promo code BCLABS.
Those bonus funds can be used across NBA Playoffs prediction markets tied to Friday’s Thunder vs. Spurs Game 3 slate. Users can also explore other active sports markets throughout the day.
Does ProphetX Have a Deposit Bonus for NBA Predictions?
ProphetX rounds out the list of top NBA prediction market promos. Users who sign up with ProphetX promo code LABS100 can receive a 20% match on their first purchase, worth up to $100 in bonus funds after spending $500 or more.
Those bonus funds can then be applied toward Thunder vs. Spurs Game 3, Western Conference Finals markets, or other NBA Playoffs contracts available on the platform.
