Resolution criteria on PolyGram: This market will resolve to "McKenna" if Stevie McKenna is officially declared the winner of the fight against Casey Streeter at Zuffa Boxing 7: Billam-Smith vs. Rozicki, scheduled for June 6, 2026. It will resolve to "Streeter" if Casey Streeter is officially declared the winner. If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond June 20, 2026, this market will resolve "50-50." The resolution source for this market will be official information from https://www.ufc.com/.
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
| McKenna vs. Streeter | 50% YES | 50% NO |
Stevie McKenna faces Casey Streeter in a middleweight bout at Zuffa Boxing 7 on 6 June 2026, with the fight card headlined by Billam-Smith versus Rozicki. The current order book on Polymarket reflects a 53% implied probability for McKenna's victory, suggesting near-parity between the two fighters in market participants' assessment. The settlement window closes on 7 June 2026, allowing for official UFC confirmation of the result.
McKenna, an Irish middleweight with a developing professional record, enters as the slight favourite. Comparable matchups in Zuffa Boxing's emerging middleweight division show that fighters with stronger amateur pedigrees or more recent high-profile wins typically command 55–60% implied probabilities. At 53%, the market is pricing McKenna's advantage as marginal, indicating either uncertainty about Streeter's capabilities or recognition that the bout represents a competitive pairing rather than a clear mismatch.
Key catalysts for traders include official weigh-in results and any last-minute fighter withdrawals or injuries, which would trigger a 50-50 resolution. The UFC's official announcement of the final card composition and fighter confirmations typically occurs in the week preceding the event. Streeter's recent fight history and any recent statements from either fighter's camp could shift the order book, particularly if injury concerns or significant training camp developments emerge. The settlement depends entirely on UFC's official scoring and decision announcement, with no alternative dispute resolution mechanism available to traders.
Zuffa Boxing is a professional boxing promotion company founded by CEO of the Ultimate Fighting Championship (UFC), Dana White, and Chairman of the Saudi Arabian General Entertainment Authority (GEA), Turki Al-Sheikh. The company is a joint venture between Sela and TKO Group Holdings (TKO), and is based in Las Vegas, Nevada.
This market settles from the official outcome published at https://www.ufc.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 "Zuffa Boxing 7: McKenna vs. Streeter (Middleweight, Main)" 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 $23 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 $4 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.
As of today, traders on Polymarket price this outcome at 50%. The number updates continuously as the order book clears. PolyGram mirrors the same live odds with locale-aware formatting and USDC settlement.
Resolution is sourced from https://www.ufc.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 7 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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