Resolution criteria on PolyGram: In the upcoming NBA game, scheduled for May 9 at 3:00PM ET: If the Pistons win, the market will resolve to "Pistons". If the Cavaliers win, the market will resolve to "Cavaliers". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. The result will be determined based on the final score including any overtime periods.
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
| Pistons vs. Cavaliers | 39% YES | 62% NO |
| Evan Mobley: Points O/U 4.5 | 91% YES | 9% NO |
| James Harden: Points O/U 3.5 | 97% YES | 3% NO |
| Jarrett Allen: Points O/U 2.5 | 53% YES | 47% NO |
| Dean Wade: Points O/U 0.5 | 52% YES | 49% NO |
| Ausar Thompson: Rebounds O/U 1.5 | 88% YES | 13% NO |
| Jarrett Allen: Rebounds O/U 1.5 | 97% YES | 3% NO |
| Duncan Robinson: Rebounds O/U 0.5 | 53% YES | 47% NO |
The Detroit Pistons face the Cleveland Cavaliers on 9 May at 3:00 PM ET in what the market currently prices as a Cavaliers-favoured matchup, with the order book implying a 39% probability of a Pistons victory. This probability reflects the broader competitive landscape between the two franchises heading into the late-season fixture, where recent form and roster composition carry substantial weight in determining outcomes.
The Cavaliers have established themselves as the stronger outfit in recent seasons, consistently outperforming the Pistons in both regular-season records and playoff positioning. Historical head-to-head records between these Eastern Conference rivals typically favour Cleveland, a pattern that informs the current 61% implied probability assigned to a Cavaliers win on Polymarket's order book. The Pistons, however, remain capable of upset performances, particularly if key contributors avoid injury and the team executes defensively at a high level. Comparable matchups between similarly-ranked teams in May typically see probabilities shift materially based on injury reports and recent momentum.
Traders should monitor roster availability in the days preceding the fixture, particularly any late-season injuries affecting either team's starting lineup or bench depth. The Cavaliers' recent performance trajectory and the Pistons' defensive efficiency metrics will likely drive order flow adjustments closer to tip-off. Scheduling considerations—including back-to-back games or travel fatigue—may also influence the probability distribution. Settlement occurs immediately following the final whistle, including any overtime periods, with the market remaining open only if postponement occurs.
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 "Pistons vs. Cavaliers" 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.
$582K in lifetime turnover and $3.0M of resting liquidity puts this market in the top 2% by volume for sports contracts on PolyGram. Order-book depth is exceptional — among the deepest order books in the category.
Last 24 hours alone saw $491K 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 9 May 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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