Resolution criteria on PolyGram: This market refers to the tennis match between Juliana Giaccio and Raquel Caballero Chica in the ITF Women Oliva, originally scheduled for May 27, 2026 at 4:00AM ET. This market will resolve to 'Juliana Giaccio' if Juliana Giaccio advances against Raquel Caballero Chica. This market will resolve to 'Raquel Caballero Chica' if Raquel Caballero Chica advances against Juliana Giaccio. 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 Oliva: Juliana Giaccio vs Raquel Caballero Chica | 0% YES | 100% NO |
| Completed Match | 100% YES | 0% NO |
Juliana Giaccio of Argentina faces Raquel Caballero Chica of Spain in an ITF Women's tournament match at Oliva, scheduled for 27 May 2026. The current order book on Polymarket shows zero probability assigned to Giaccio advancing, reflecting either minimal trading activity or strong market conviction favouring Caballero Chica. With settlement occurring by 3 June 2026, the seven-day buffer provides modest time for schedule adjustments before the market resolves to a 50-50 split.
Giaccio, ranked outside the top 300 on the WTA circuit, has competed primarily on ITF and lower-tier professional circuits. Caballero Chica similarly operates within ITF competition, though comparative ranking data between the two players remains limited in publicly available sources. Historical ITF matchups at Oliva have typically favoured players with recent tournament momentum and consistent court performance at the venue. The absence of recent head-to-head records between these competitors leaves traders reliant on broader form indicators and surface-specific records.
Traders should monitor ITF tournament draws and official announcements from the Oliva event organisers, particularly regarding player withdrawals or schedule changes in the week preceding 27 May. Weather conditions at the Spanish coastal venue and any late injury reports could trigger market movement. The current 0% probability likely reflects low liquidity rather than certainty; meaningful trading activity would establish a more realistic probability distribution reflecting both players' recent performances and tournament context.
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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 Oliva: Juliana Giaccio vs Raquel Caballero Chica" 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.
$20 in lifetime turnover and $0 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.
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 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.
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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