Resolution criteria on PolyGram: This market refers to the table tennis match between Miwa Harimoto and Sabine Winter in a WTT event, scheduled for May 9 at 7:00AM ET. This market will resolve to 'Harimoto' if Miwa Harimoto wins against Sabine Winter. This market will resolve to 'Winter' if Sabine Winter wins against Miwa Harimoto. 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
| WTT - Women's Singles: Miwa Harimoto vs Sabine Winter | 50% YES | 50% NO |
Miwa Harimoto and Sabine Winter are scheduled to compete in a Women's Singles match at a WTT event on 9 May at 7:00 AM ET. The current order book on Polymarket reflects a 50-50 split, indicating genuine uncertainty amongst traders regarding the outcome. Settlement occurs on 16 May, allowing a seven-day window for the match to conclude; cancellations, ties, or delays beyond that threshold trigger a 50-50 resolution.
Harimoto, the Japanese player, holds a significantly higher career ranking and competitive pedigree than Winter, a German competitor with limited international profile. Historical matchups between players of disparate ranking tiers typically favour the higher-ranked athlete, yet table tennis remains volatile—upsets occur regularly at WTT events where draw-dependent scheduling and fatigue from multiple matches can disrupt seeding advantages. The 50-50 pricing suggests the market is either discounting Harimoto's ranking advantage or pricing in genuine uncertainty about their head-to-head record and recent form.
Traders should monitor WTT tournament announcements regarding bracket confirmation and match scheduling, as any fixture postponements could affect preparation timelines. Recent injury reports or withdrawal announcements from either player would shift probabilities materially. Additionally, results from warm-up competitions in the weeks preceding 9 May may provide form indicators; Harimoto's performance at preceding international events would be particularly instructive given her established ranking.
This market settles from the official outcome published at https://www.worldtabletennis.com/. 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 "WTT - Women's Singles: Miwa Harimoto vs Sabine Winter" 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.
As of today, traders on Polymarket price this outcome at 50%. The number updates continuously as the order book clears. PolyGram mirrors the same live odds with locale-aware formatting and USDC settlement.
Resolution is sourced from https://www.worldtabletennis.com/. 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 16 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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