Resolution criteria on PolyGram: In the upcoming NBA game between Knicks and Spurs, scheduled for 2026-06-04 at 00:30 UTC: This event will resolve to the player who records the first rebound of the game (offensive or defensive), as recorded in the official NBA play-by-play. Team rebounds do not count. If no player listed in this basket records the first rebound, the event resolves to "Other". If the game is postponed, this event remains open until the game is completed. If the game is canceled with no make-up, or the outcome cannot be determined from official sources, this neg-risk event resolves to "Other".
PolyGram is an on-chain prediction market where you trade YES or NO outcome shares with real USDC on Polygon. For this market, buy YES if you believe the event will happen, or NO if you think it won't. Your maximum loss is your stake — winning shares pay $1.00 each at resolution. Unlike sportsbooks, there is no house edge: prices are set by supply and demand from other traders and reflect the crowd's real-time probability.
Market outcomes
| Jalen Brunson | 50% YES | 51% NO |
| Mikal Bridges | 47% YES | 54% NO |
| OG Anunoby | 47% YES | 54% NO |
| Karl-Anthony Towns | 47% YES | 54% NO |
| Josh Hart | 50% YES | 51% NO |
| Mitchell Robinson | 47% YES | 54% NO |
| Miles McBride | 50% YES | 51% NO |
| Guerschon Yabusele | 47% YES | 54% NO |
The Knicks and Spurs will meet on 4 June 2026 in an NBA fixture, with this market tracking which individual player secures the first rebound of the match. The settlement hinges on official NBA play-by-play data; team rebounds are excluded, and if none of the named players in the basket records that initial board, the market resolves to "Other". The current order book on Polymarket reflects a 50% implied probability, suggesting even odds between the listed candidates and the "Other" category combined.
First-rebound markets typically hinge on roster composition and starting lineups rather than broader team performance metrics. Centres and power forwards historically dominate early-game rebounding opportunities, as they control the paint during opening tip-offs and initial possessions. The Spurs' roster construction—particularly their frontcourt depth—and the Knicks' interior presence will shape which players face the highest probability of being first to the glass. Comparable markets on Polymarket show that when rosters feature established rebounding specialists, those players' odds compress significantly; conversely, balanced frontcourts produce wider probability distributions across candidates.
Traders should monitor official NBA roster confirmations and any late injury announcements before tip-off, as absences of key rebounders shift the probability landscape materially. Starting lineup confirmations typically arrive within hours of game time. The settlement window closes immediately after the opening tip, so any roster changes announced after that point will not affect market resolution. Current market depth suggests modest liquidity, typical for niche NBA prop markets on Polymarket.
This market settles from the official outcome published at https://www.nba.com/. A proposer submits the final result to the UMA optimistic oracle on Polygon; the two-hour dispute window closes and payouts clear in USDC.
The mechanics for trading "Knicks @ Spurs: Who will record the first rebound?" are the same as any other PolyGram sporting event contract. Each YES share resolves to $1 if the event happens, or $0 if it doesn't. The current price between 0¢ and 100¢ is the market's probability estimate, set live by the order book.
$6 in lifetime turnover and $116 of resting liquidity puts this market in the below the median by volume for sports contracts on PolyGram. Order-book depth is thin — large orders may need to be split across the book or executed as limit orders.
Last 24 hours alone saw $6 in turnover, well above the lifetime daily-average for this market — a clear sign of news catalysing trader activity right now.
The market has been open for under a month — fresh enough that information asymmetry remains a real factor.
Higher-volume markets tend to have tighter spreads and faster price discovery — meaning the displayed YES/NO percentages are more likely to reflect the true crowd-implied probability rather than a single trader's directional view.
Resolution is sourced from https://www.nba.com/. Settlement is executed by the UMA optimistic oracle on Polygon, with a 2-hour dispute window before payouts clear.
This prediction market is scheduled to close on 4 June 2026. After the resolving event occurs, settlement typically clears within 24 hours once the UMA optimistic oracle confirms the outcome. All payouts are in USDC on the Polygon network.
To trade on this prediction market, create a free PolyGram account at polygram.ink, deposit USDC via Polygon, and place a YES or NO order on the outcome you believe in. You can learn more on our how-it-works page. Your maximum loss is limited to your stake — there is no leverage or margin.
When the outcome is determined, winning YES shares pay out $1.00 each in USDC, while losing shares pay $0. Settlement is handled by the UMA optimistic oracle on Polygon — a proposer submits the result, a two-hour dispute window opens, and if uncontested, payouts are distributed automatically. You can withdraw your winnings to any Polygon wallet.
Prediction-market positions can lose 100% of staked capital. Outcomes are uncertain by definition — historical accuracy of crowd-implied probabilities is high in aggregate but not for any single market. PolyGram does not provide investment advice. Trade only with capital you can afford to lose.
Regulatory status varies by jurisdiction. Germany, the United States, and most EU countries treat Polymarket-style event contracts under one of three frameworks: financial derivative, gambling product, or unregulated novel asset. Consult local counsel before trading.
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