Resolution criteria on PolyGram: This market refers to the tennis match between Roberto Carballes Baena and Hugo Dellien in the Roland Garros, Qualification ATP, originally scheduled for May 22, 2026 at 5:00AM ET. This market will resolve to 'Roberto Carballes Baena' if Roberto Carballes Baena advances against Hugo Dellien. This market will resolve to 'Hugo Dellien' if Hugo Dellien advances against Roberto Carballes Baena. 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.
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, Qualification ATP: Roberto Carballes Baena vs Hugo Dellien Total Sets: O/U 2.5 | 100% YES | 0% NO |
| Roland Garros, Qualification ATP: Roberto Carballes Baena vs Hugo Dellien Match O/U 22.5 | 100% YES | 0% NO |
| Roland Garros, Qualification ATP: Roberto Carballes Baena vs Hugo Dellien Match O/U 23.5 | 100% YES | 0% NO |
| Roland Garros, Qualification ATP: Roberto Carballes Baena vs Hugo Dellien Set 1 O/U 8.5 | 100% YES | 0% NO |
| Roland Garros, Qualification ATP: Roberto Carballes Baena vs Hugo Dellien Set 1 O/U 9.5 | 0% YES | 100% NO |
| Roland Garros, Qualification ATP: Roberto Carballes Baena vs Hugo Dellien Set 1 O/U 10.5 | 0% YES | 100% NO |
| Roland Garros, Qualification ATP: Roberto Carballes Baena vs Hugo Dellien Set 1 Winner | 0% YES | 100% NO |
| Roland Garros, Qualification ATP: Roberto Carballes Baena vs Hugo Dellien Match O/U 21.5 | 100% YES | 0% NO |
Roberto Carballes Baena meets Hugo Dellien in Roland Garros qualifying, with the market currently split close to even. On Polymarket, the implied price is being formed by the order book, so the 50% crowd view reflects a live balance between backers of Carballes Baena’s clay pedigree and Dellien’s current run through qualifying. The pair have met before, with Carballes Baena leading the head-to-head 2-1, including 2-1 on clay, which gives the Spaniard a modest historical edge rather than a decisive one.
Recent form points to a tight match rather than a one-sided spot. Reporting ahead of the contest indicated both players had already won two qualifying matches, but Dellien had not dropped a set, while Carballes Baena had conceded one. TennisTonic also noted Dellien had spent less time on court overall, which can matter in best-of-three qualifying rounds on clay where endurance and recovery are relevant. Past meetings between the two have tended to be competitive, so the market price is likely to stay sensitive to any sign of physical wear, service dips, or a fast start from either player.
Traders should watch for official draw and scheduling updates, plus any late changes to court assignment or start time, because qualification matches at Roland Garros can shift with weather and backlog. ESPN’s match listing shows Carballes Baena reached the qualifying final against Dellien after beating Francesco Maestrelli, reinforcing that this is the final hurdle before the main draw. If the match is completed without a winner on the day, or is delayed beyond the settlement window, the market mechanics allow for non-standard resolution, so the exact match status matters as much as the scoreline.
This market settles from the official outcome published at https://www.atptour.com/en/scores/current. 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 29 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.atptour.com/en/scores/current), 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 "Roland Garros, Qualification ATP: Roberto Carballes Baena vs Hugo Dellien", 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 ($0 of resting liquidity), a $50 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 "Roland Garros, Qualification ATP: Roberto Carballes Baena vs Hugo Dellien" 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.
$309K in lifetime turnover and $0 of resting liquidity puts this market in the top 10% by volume for tennis 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 $308K 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.atptour.com/en/scores/current. 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 29 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 "Roland Garros, Qualification ATP: Roberto Carballes Baena vs Hugo Dellien", 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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