Resolution criteria on PolyGram: This market refers to the tennis match between Yulia Starodubtseva and Anhelina Kalinina in the GP SAR La Princesse Lalla Meryem, originally scheduled for May 20, 2026 at 5:00AM ET. This market will resolve to 'Yulia Starodubtseva' if Yulia Starodubtseva advances against Anhelina Kalinina. This market will resolve to 'Anhelina Kalinina' if Anhelina Kalinina advances against Yulia Starodubtseva. 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 $397K 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: Yulia Starodubtseva vs Anhelina Kalinina Set 1 Winner | 0% YES | 100% NO |
| GP SAR La Princesse Lalla Meryem: Yulia Starodubtseva vs Anhelina Kalinina Total Sets: O/U 2.5 | 0% YES | 100% NO |
| GP SAR La Princesse Lalla Meryem: Yulia Starodubtseva vs Anhelina Kalinina Set Handicap +/-1.5 | 100% YES | 0% NO |
| GP SAR La Princesse Lalla Meryem: Yulia Starodubtseva vs Anhelina Kalinina Set 1 O/U 8.5 | 100% YES | 0% NO |
| GP SAR La Princesse Lalla Meryem: Yulia Starodubtseva vs Anhelina Kalinina Set 1 O/U 9.5 | 0% YES | 100% NO |
| GP SAR La Princesse Lalla Meryem: Yulia Starodubtseva vs Anhelina Kalinina Set 1 O/U 10.5 | 0% YES | 100% NO |
| GP SAR La Princesse Lalla Meryem: Yulia Starodubtseva vs Anhelina Kalinina Match O/U 21.5 | 100% YES | 0% NO |
| GP SAR La Princesse Lalla Meryem: Yulia Starodubtseva vs Anhelina Kalinina Match O/U 22.5 | 0% YES | 100% NO |
Yulia Starodubtseva is scheduled to play Anhelina Kalinina at the WTA 250 Rabat event, the Grand Prix SAR La Princesse Lalla Meryem, on clay in Morocco. Polymarket’s order book is currently pricing the match at 0% YES, so the implied probability is being formed from no meaningful buy-side support rather than from an active consensus on the favourite. In practice, that means the market is effectively saying there is no accepted priced outcome yet, which can happen when a match has not been drawn, is not listed correctly, or is already in doubt.
For comparable WTA clay matches, the first useful guide is whether both players appear in the official draw and scheduled order of play, since late withdrawals and walkovers are common enough to move settlement into the cancellation rules. WTA’s Rabat page lists the tournament running 18–23 May 2026 on outdoor clay with a $283,347 total commitment, so any reliable read on this market depends on whether the pairing actually goes ahead on schedule. If the match is played and completed, settlement should follow the actual winner; if it is not played, the market can revert to 50–50 under the stated rules.
Traders should watch the WTA draw and daily order of play updates, plus any last-minute retirement or withdrawal notices from the tournament site or official WTA channels. Recent tournament listings and live match pages show Rabat is operating on a normal day-by-day schedule, but these events can shift quickly if a player pulls out after the draw has been published. The key dependency is whether both players remain entered for the same first-round slot; if the fixture disappears from the schedule or is replaced by a lucky loser, the market’s 0% reading becomes less informative than the event-status update itself.
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 27 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: Yulia Starodubtseva vs Anhelina Kalinina", 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 ($397K 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: Yulia Starodubtseva vs Anhelina Kalinina" 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.
$234K in lifetime turnover and $397K of resting liquidity puts this market in the top 10% 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 $234K 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 27 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: Yulia Starodubtseva vs Anhelina Kalinina", 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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