Resolution criteria on PolyGram: This market refers to the tennis match between Petra Marcinko and Jessica Bouzas Maneiro in the GP SAR La Princesse Lalla Meryem, originally scheduled for May 21, 2026 at 5:00AM ET. This market will resolve to 'Petra Marcinko' if Petra Marcinko advances against Jessica Bouzas Maneiro. This market will resolve to 'Jessica Bouzas Maneiro' if Jessica Bouzas Maneiro advances against Petra Marcinko. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50.
Real-money prediction markets aggregate live odds from thousands of traders, surfacing a sharper probability than any single forecast. Odds will populate live once the order book fills with 7 days to resolution, well inside the window where catalysts move price most, backed by $819K of resting liquidity.
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
| GP SAR La Princesse Lalla Meryem: Petra Marcinko vs Jessica Bouzas Maneiro Total Sets: O/U 2.5 | 0% YES | 100% NO |
| GP SAR La Princesse Lalla Meryem: Petra Marcinko vs Jessica Bouzas Maneiro Set 1 Winner | 100% YES | 0% NO |
| GP SAR La Princesse Lalla Meryem: Petra Marcinko vs Jessica Bouzas Maneiro Match O/U 21.5 | 0% YES | 100% NO |
| GP SAR La Princesse Lalla Meryem: Petra Marcinko vs Jessica Bouzas Maneiro Set 1 O/U 8.5 | 100% YES | 0% NO |
| GP SAR La Princesse Lalla Meryem: Petra Marcinko vs Jessica Bouzas Maneiro Set 1 O/U 9.5 | 0% YES | 100% NO |
| GP SAR La Princesse Lalla Meryem: Petra Marcinko vs Jessica Bouzas Maneiro Set 1 O/U 10.5 | 0% YES | 100% NO |
| GP SAR La Princesse Lalla Meryem: Petra Marcinko vs Jessica Bouzas Maneiro Set Handicap +/-1.5 | 0% YES | 100% NO |
| GP SAR La Princesse Lalla Meryem: Petra Marcinko vs Jessica Bouzas Maneiro Match O/U 23.5 | 0% YES | 100% NO |
Petra Marcinko is scheduled to play Jessica Bouzas Maneiro in the quarter-finals at the Grand Prix SAR La Princesse Lalla Meryem in Rabat. The current Polymarket price is effectively 0% YES, so the order book is implying either a missed feed, a stale listing, or that the market has not yet adjusted to the match being on the schedule. For a live tennis market, that sort of zero pricing is usually less about a view on the player matchup and more about whether traders believe the event will actually begin and be graded within the settlement window.
Bouzas Maneiro comes into the match with the cleaner recent form in the available draw data: she beat Lisa Zaar 6-0, 7-5 and was listed by Tennis Tonic as 4 wins from the title, with a projected path that had her meeting Marcinko in the quarter-finals. Marcinko was seeded sixth in the Eurosport listing, which can matter in a lower-tier clay event where seed protection and draw positioning often shape expectations. The market should be read against comparable WTA 250 clay-quarter-final cases: the price usually tracks not just ranking and seeding, but whether the favourite has already played on the day, any withdrawal risk, and whether the match is moved to an outside court or delayed.
Traders should watch the official order of play, any late withdrawal or walkover announcements, and whether the match actually starts before the 28 May settlement deadline, because the rules revert to 50-50 if it is cancelled, ends level, or is delayed beyond seven days without a winner. Eurosport and Tennis Majors both still list the fixture as planned for 21 May, while Flashscore and other live-score feeds are the fastest checks for a first-ball-toss confirmation. Any change in court assignment, schedule slippage, or medical timeout-related retirement would be the main dependency for resolution, rather than pre-match narrative alone.
This market settles from the official outcome published at https://www.wtatennis.com/scores. A proposer submits the final result to the UMA optimistic oracle on Polygon; the two-hour dispute window closes and payouts clear in USDC.
For this market, the resolution date is 28 May 2026. A UMA proposer can submit the outcome from that moment; the two-hour dispute window closes at , and assuming no counter-claim is staked, winning USDC clears to trader balances by approximately .
If a dispute is filed inside the two-hour window, the outcome escalates to UMA token-holder voting, which extends settlement by roughly 48 hours. Because this market resolves from a publicly verifiable feed (https://www.wtatennis.com/scores), the probability of dispute is materially lower than the overall 0.5% PolyGram baseline — most disputes occur on markets with ambiguous wording or non-public resolution sources.
Withdrawal pace from your PolyGram balance is non-custodial and immediate — once payout clears, funds are yours to send to any Polygon wallet you control. Funds clear directly to your in-app USDC balance on Polygon. Withdrawals are non-custodial: send to any address you control, typical confirmation under 30 seconds, gas paid in USDC if you'd rather not hold MATIC.
Minimum order size on PolyGram is $1.00, with no maximum cap aside from available book depth. Orders route into Polymarket's on-chain CLOB on Polygon; the matching engine pairs YES buyers with NO buyers atomically — every executed trade is settled on-chain with no counterparty risk. For "GP SAR La Princesse Lalla Meryem: Petra Marcinko vs Jessica Bouzas Maneiro", order-book behaviour for this market reflects the underlying volatility of the outcome — patient limit orders typically fill closer to mid than market orders.
The trade ticket includes a slippage box (default 2%, configurable 0.1%-10%) that caps the worst-case entry price. Your maximum loss is your stake — winning YES (or NO) shares pay $1.00 each at resolution. With this market's current book depth ($819K of resting liquidity), a $500 order should fill with single-cent slippage at the displayed mid-price.
PolyGram charges 0% house edge — no spread mark-up, no rake on winnings, no withdrawal fees beyond network gas. The platform earns exclusively from optional features (copy-trade boosts, advanced order types, the yield vault on idle USDC); the trading surface itself is at-cost.
The mechanics for trading "GP SAR La Princesse Lalla Meryem: Petra Marcinko vs Jessica Bouzas Maneiro" are the same as any other PolyGram 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.
$167K in lifetime turnover and $819K of resting liquidity puts this market in the top 30% by volume for tennis contracts on PolyGram. Order-book depth is exceptional — among the deepest order books in the category.
Last 24 hours alone saw $167K 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.wtatennis.com/scores. 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 28 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. For "GP SAR La Princesse Lalla Meryem: Petra Marcinko vs Jessica Bouzas Maneiro", the considerations above apply directly — Trade size should reflect the binary nature of the payoff: even a 70% probability event resolves NO 30% of the time, so any single position can lose 100% of staked capital.
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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