Resolution criteria on PolyGram: In the upcoming NBA game, scheduled for May 15 at 12:00AM 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 | 42% YES | 59% NO |
| Team to Score First | 50% YES | 50% NO |
| Odd/Even Score | 50% YES | 50% NO |
The Detroit Pistons will face the Cleveland Cavaliers on 15 May at 12:00 AM ET in what appears to be a playoff fixture based on the settlement window timing. The current order book on Polymarket reflects a 41% implied probability for a Pistons victory, suggesting the crowd favours the Cavaliers at 59%. This probability distribution emerges from real-time trading activity across the platform's liquidity pools, with traders pricing in relative team strength, recent form, and playoff positioning as of market open.
Historical matchups between these franchises show competitive balance, though recent seasons have favoured Cleveland's roster construction and playoff experience. The Cavaliers have maintained stronger regular-season records and deeper playoff runs in recent years, which typically anchors crowd sentiment towards the higher-seeded or more accomplished team in playoff scenarios. The 41% probability for Detroit suggests traders are pricing in meaningful but not overwhelming underdog status for the Pistons.
Key variables affecting this probability include confirmed roster availability—any late injury announcements to either team's star players could shift the order book substantially. The specific playoff round context matters considerably; first-round matchups typically see tighter probability distributions than later rounds. Traders should monitor official NBA injury reports and team announcements through to tipoff, as these remain the primary catalysts for repricing. The settlement window closes immediately after the final score is confirmed, leaving no room for post-game adjustments.
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.
$118 in lifetime turnover and $23K of resting liquidity puts this market in the below the median by volume for sports contracts on PolyGram. Order-book depth is modest — expect a couple of cents of slippage on $1k+ trades.
Last 24 hours alone saw $101 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 15 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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