Trade the outcome below — no house edge, instant USDC settlement on Polygon
Resolution criteria on PolyGram: This market refers to the tennis match between Anna Kalinskaya and Camila Osorio in the Roland Garros WTA, originally scheduled for May 30, 2026 at 5:00AM ET. This market will resolve to 'Anna Kalinskaya' if Anna Kalinskaya advances against Camila Osorio. This market will resolve to 'Camila Osorio' if Camila Osorio advances against Anna Kalinskaya. 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.
Sports outcome markets settle within hours of game-end via the UMA optimistic oracle, with the YES/NO line refreshing in real time on every meaningful in-game event. 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 $124K 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
| Roland Garros WTA: Anna Kalinskaya vs Camila Osorio | 100% YES | 1% NO |
| Completed Match | 100% YES | 0% NO |
| Roland Garros WTA: Anna Kalinskaya vs Camila Osorio Set 1 O/U 8.5 | 100% YES | 0% NO |
| Roland Garros WTA: Anna Kalinskaya vs Camila Osorio Total Sets: O/U 2.5 | 100% YES | 1% NO |
| Roland Garros WTA: Anna Kalinskaya vs Camila Osorio Set 1 Winner | 100% YES | 0% NO |
| Roland Garros WTA: Anna Kalinskaya vs Camila Osorio Match O/U 21.5 | 100% YES | 0% NO |
| Roland Garros WTA: Anna Kalinskaya vs Camila Osorio Set 1 O/U 9.5 | 0% YES | 100% NO |
| Roland Garros WTA: Anna Kalinskaya vs Camila Osorio Match O/U 22.5 | 100% YES | 0% NO |
Anna Kalinskaya faces Camila Osorio in the women's singles draw at Roland Garros, scheduled for 30 May 2026. The current order book on Polymarket prices Kalinskaya's advancement at 34 per cent, implying Osorio at 66 per cent. This 2-to-1 underdog pricing reflects market participants' assessment of the matchup based on recent form, head-to-head records, and surface suitability.
Kalinskaya has established herself as a top-50 player with improving clay-court credentials, whilst Osorio, a Colombian left-hander, has shown vulnerability on slower surfaces despite her potential. Historical context suggests that clay specialists and players with strong baseline games tend to outperform at Roland Garros. The current probability weighting towards Osorio aligns with her ranking advantage and clay experience, though Kalinskaya's upward trajectory in 2025–2026 has narrowed the gap compared to earlier seasons.
Traders should monitor injury reports in the fortnight preceding the match, as both players' fitness status could shift the order book substantially. Warm-up tournament results from the clay swing immediately before Roland Garros will provide the most recent form data. Additionally, any changes to the draw or scheduling—including potential weather delays that could extend beyond the seven-day resolution window—carry settlement risk. The match's position in the draw and opponent quality in preceding rounds may also influence player fatigue and confidence entering this fixture.
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 6 June 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.
Sports markets on PolyGram historically have the fastest payout cycle — over 94% clear within four hours of game-end, with the remainder gated by overtime, weather, or referee review. 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 "Roland Garros WTA: Anna Kalinskaya vs Camila Osorio", sports markets tend to see the tightest 1-2¢ spreads in the final hour before tip-off, widening rapidly the moment of any in-game news.
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 ($124K 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.
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The mechanics for trading "Roland Garros WTA: Anna Kalinskaya vs Camila Osorio" 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.
$419K in lifetime turnover and $124K of resting liquidity puts this market in the top 10% 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 $418K 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 6 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. For "Roland Garros WTA: Anna Kalinskaya vs Camila Osorio", the considerations above apply directly — Sports outcome contracts are sensitive to single-event variance — a coin-flip game, a referee call, or an injured player can move the line 10-30¢ in seconds. Position sizing should reflect that variance rather than the expected value alone.
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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