Resolution criteria on PolyGram: This market refers to the tennis match between Victor Alvares De Castro Rocha and Pavlos Tsitsipas in the ITF Men Maringa, originally scheduled for May 13, 2026 at 5:00PM ET. This market will resolve to 'Victor Alvares De Castro Rocha' if Victor Alvares De Castro Rocha advances against Pavlos Tsitsipas. This market will resolve to 'Pavlos Tsitsipas' if Pavlos Tsitsipas advances against Victor Alvares De Castro Rocha. 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.
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
| ITF Maringa: Victor Alvares De Castro Rocha vs Pavlos Tsitsipas | 24% YES | 77% NO |
| Completed Match | 50% YES | 51% NO |
Victor Alvares De Castro Rocha, a Brazilian ITF circuit regular, faces Pavlos Tsitsipas in the ITF Men's tournament at Maringa, originally scheduled for 13 May 2026. The current order book on Polymarket prices Alvares De Castro Rocha's victory at 32 per cent implied probability, reflecting market participants' assessment that Tsitsipas enters as the favoured competitor. This pricing has formed across the exchange's liquidity pools as traders have positioned ahead of the settlement window closing on 20 May.
Tsitsipas, the younger brother of ATP-ranked Stefanos Tsitsipas, has competed on the ITF circuit with varying results; his family connection and training environment typically position him competitively against mid-tier ITF opponents. Alvares De Castro Rocha's record on the ITF Men's circuit shows he competes regularly but lacks the ranking trajectory or breakthrough performances that would suggest significant upset potential. The 32 per cent probability for Alvares De Castro Rocha reflects the typical pricing for an underdog facing an opponent with superior resources and pedigree, though ITF matches remain inherently volatile.
Traders should monitor whether the match proceeds as scheduled on 13 May; any postponement beyond seven days without completion triggers a 50-50 resolution. Injury announcements or withdrawal notices from either player would shift the order book materially. The ITF Maringa draw and seeding information, typically released days before the tournament, may provide additional context on relative strength assessments that could adjust current pricing.
This market settles from the official outcome published at https://www.itftennis.com/en/tournament-calendar/. 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 "ITF Maringa: Victor Alvares De Castro Rocha vs Pavlos Tsitsipas" 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.
$304 in lifetime turnover and $22 of resting liquidity puts this market in the below the median 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 $304 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.itftennis.com/en/tournament-calendar/. 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.
Explore more prediction market odds and trading opportunities on PolyGram: