Resolution criteria on PolyGram: This market refers to the tennis match between Roman Safiullin and Laslo Djere in the Oeiras 4, originally scheduled for May 13, 2026 at 11:00AM ET. This market will resolve to 'Roman Safiullin' if Roman Safiullin advances against Laslo Djere. This market will resolve to 'Laslo Djere' if Laslo Djere advances against Roman Safiullin. 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. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances.
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
| Oeiras 4: Roman Safiullin vs Laslo Djere | 0% YES | 100% NO |
| Completed Match | 100% YES | 0% NO |
| Oeiras 4: Roman Safiullin vs Laslo Djere Set 1 O/U 8.5 | 100% YES | 0% NO |
| Oeiras 4: Roman Safiullin vs Laslo Djere Set 1 O/U 10.5 | 0% YES | 100% NO |
| Oeiras 4: Roman Safiullin vs Laslo Djere Set 1 Winner | 0% YES | 100% NO |
| Oeiras 4: Roman Safiullin vs Laslo Djere Set 1 O/U 9.5 | 100% YES | 0% NO |
| Oeiras 4: Roman Safiullin vs Laslo Djere Total Sets: O/U 2.5 | 0% YES | 100% NO |
| Oeiras 4: Roman Safiullin vs Laslo Djere Match O/U 21.5 | 100% YES | 0% NO |
Roman Safiullin and Laslo Djere are scheduled to meet in the Oeiras 4 tournament on 13 May 2026. The match is a qualifying or main-draw fixture at this ATP-level event in Portugal. The current order book on Polymarket reflects a 0% implied probability for Safiullin advancing, suggesting the market is pricing either a strong expectation of Djere's victory or significant uncertainty about whether the match will be contested at all.
Djere has established himself as a consistent ATP performer with a career ranking peak in the top 30, whilst Safiullin, a Russian player, has competed primarily on the Challenger circuit with occasional ATP main-draw appearances. Head-to-head records between lower-ranked players often show limited historical precedent; comparable matchups at this level typically see the higher-ranked player favoured by 60–75% in betting markets. A 0% probability for Safiullin is extreme and suggests either the market has priced in Djere as a heavy favourite or there is concern about match completion—cancellations, injuries, or scheduling conflicts affecting Portuguese spring tournaments are not uncommon.
Traders should monitor ATP injury reports and entry lists as the May tournament approaches. Weather disruptions in Portugal during spring can delay matches beyond the seven-day settlement window, triggering a 50-50 resolution. Confirmation of both players' participation and fitness status in the week before 13 May will be critical. Any withdrawal or late scratches would immediately alter the settlement outcome, making pre-tournament announcements from the ATP or tournament organisers key catalysts to track.
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.
The mechanics for trading "Oeiras 4: Roman Safiullin vs Laslo Djere" 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.
$122K in lifetime turnover and $0 of resting liquidity puts this market in the top 30% 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 $121K 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 20 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.
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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