Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
100% | 0% | 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
Polymarket's conditional token structure currently prices a Cina victory at 71%, reflecting modest confidence in the Italian qualifier's chances against American serve-dominant Opelka on clay at Roland Garros. The market settles on 31 May 2026 at 12:30 UTC, allowing a seven-day buffer beyond the scheduled 24 May fixture. USDC liquidity on Polygon underpins the contract, with settlement contingent on match completion; any cancellation, tie, or unresolved delay beyond that window triggers a 50-50 split.
Cina's profile as a lower-ranked player breaking through qualifying rounds typically commands underdog pricing in Polymarket's clay-court matchups. Historical precedent suggests markets price Italian clay specialists at a premium when facing power-based American opponents on European surfaces—Opelka's serve-and-volley game, whilst formidable on faster courts, has shown vulnerability to sustained baseline rallies. Comparable early-round encounters between ranked Americans and European qualifiers have settled near 65–75% for the European player, positioning current odds within established ranges.
Traders should monitor Roland Garros draw confirmations and any weather delays affecting the clay schedule, as the seven-day settlement window provides limited flexibility. Opelka's recent form on clay surfaces and any late-stage injuries reported by either camp will shift the conditional token price materially. Court assignments and scheduling announcements typically arrive 48 hours before play; surface conditions and weather forecasts for late May in Paris remain critical variables for match completion risk.
Methodology
This page reviews Roland Garros ATP: Federico Cina vs Reilly Opelka across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against the Polymarket order book at 0% fees.
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
- Where can I trade this market with the lowest fees?
- On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- 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.
- 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.
Trade Roland Garros ATP: Federico Cina vs Reilly Opelka on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
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