Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on PolyGram → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on PolyGram → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on PolyGram → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on PolyGram → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on PolyGram.
Active sub-markets
Market context
Michael Zheng and Dino Prizmic are scheduled to meet in the opening rounds of Roland Garros on 24 May 2026. The market currently prices Zheng's advancement at zero, reflecting either extreme confidence in Prizmic or minimal trading activity on this particular fixture. Settlement occurs by 31 May, allowing a seven-day window for match completion; any cancellation, tie, or unresolved outcome beyond that threshold triggers a 50-50 split of the conditional tokens on Polygon.
Zheng, ranked outside the ATP top 200, has limited Grand Slam main draw history, whilst Prizmic similarly occupies the lower reaches of professional tennis. Comparable early-round matches between unseeded or qualifier-level players typically see probability distributions reflecting recent head-to-head records, qualifying form, and surface aptitude. Neither player commands the recognition that drives substantial liquidity into Polymarket contracts, which explains the sparse USDC depth and the extreme probability reading. Historical precedent suggests such matches often resolve based on minor form fluctuations or injury status rather than fundamental ranking gaps.
Traders monitoring this contract should track official Roland Garros draw confirmations and any late withdrawals announced through the ATP or tournament channels. Court assignments and weather delays affecting the clay schedule could push matches beyond the scheduled window, triggering the tie-break resolution clause. Recent tournament schedules have occasionally compressed opening rounds, potentially accelerating this fixture's completion. Injury reports or qualifying results in the days preceding 24 May will provide the most actionable signals for repricing the conditional tokens before settlement.
Methodology
We track Roland Garros ATP: Michael Zheng vs Dino Prizmic on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
FAQ
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- What does it cost to trade on PolyGram?
- Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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