Trade the outcome below — no house edge, instant USDC settlement on Polygon
Resolution criteria on PolyGram: This market refers to the tennis match between Alex de Minaur and Alexander Blockx in the Roland Garros ATP, originally scheduled for May 27, 2026 at 5:00AM ET. This market will resolve to 'Alex de Minaur' if Alex de Minaur advances against Alexander Blockx. This market will resolve to 'Alexander Blockx' if Alexander Blockx advances against Alex de Minaur. 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. Current odds favour the YES side at 51%, making this a coinflip market with 8 days to resolution, well inside the window where catalysts move price most, backed by $727K 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 ATP: Alex de Minaur vs Alexander Blockx | 51% YES | 50% NO |
| Completed Match | 48% YES | 52% NO |
| Roland Garros ATP: Alex de Minaur vs Alexander Blockx Set 1 O/U 8.5 | 51% YES | 50% NO |
| Roland Garros ATP: Alex de Minaur vs Alexander Blockx Set 1 O/U 9.5 | 50% YES | 50% NO |
| Roland Garros ATP: Alex de Minaur vs Alexander Blockx Set 1 O/U 10.5 | 50% YES | 51% NO |
| Roland Garros ATP: Alex de Minaur vs Alexander Blockx Total Sets: O/U 3.5 | 51% YES | 50% NO |
| Roland Garros ATP: Alex de Minaur vs Alexander Blockx Set Handicap +/-1.5 | 50% YES | 51% NO |
| Roland Garros ATP: Alex de Minaur vs Alexander Blockx Total Sets: O/U 4.5 | 50% YES | 51% NO |
Alex de Minaur faces Alexander Blockx in the opening round of Roland Garros in May 2026, with the match originally scheduled for 27 May at 5:00 AM ET. The current order book on Polymarket reflects a 51% implied probability for de Minaur's advancement, suggesting near-parity between the two outcomes amongst active traders. This even split indicates meaningful uncertainty about the match result despite de Minaur's established ranking advantage.
De Minaur enters Roland Garros as a top-20 player with consistent Grand Slam appearances and a clay-court record that has improved substantially over recent seasons. Blockx, a lower-ranked qualifier or direct-entry player, would represent a significant upset if victorious. Historical patterns at Roland Garros show that seeded players advance in roughly 75–80% of first-round matchups against unseeded opponents, though clay-court specialists occasionally disrupt expectations. The current 51–49 split suggests the market is pricing in either a closer-than-expected matchup or meaningful uncertainty about de Minaur's form heading into the tournament.
Traders should monitor de Minaur's preparation tournaments in the weeks preceding Roland Garros, particularly his performance on clay at ATP 250 events in May. Injury reports and withdrawal announcements from either player would immediately shift the order book. Weather conditions at Roland Garros—particularly rain delays that could extend beyond the seven-day resolution window—present a secondary consideration. The early morning scheduling (5:00 AM ET) may also influence match dynamics, though this is fixed and already reflected in current pricing.
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 3 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.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.
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 ATP: Alex de Minaur vs Alexander Blockx", 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 ($727K 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 ATP: Alex de Minaur vs Alexander Blockx" 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.
$114K in lifetime turnover and $727K of resting liquidity puts this market in the top 30% 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 $114K 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 3 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 ATP: Alex de Minaur vs Alexander Blockx", 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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