Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
BTC Prediction Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on BTC Prediction → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on BTC Prediction → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on BTC Prediction → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on BTC Prediction → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on BTC Prediction → |
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 BTC Prediction.
Active sub-markets
Market context
Alina Korneeva, the Russian qualifier ranked outside the top 100, faces Italian qualifier Elisabetta Cocciaretto in the opening round of Roland Garros 2026. The match is scheduled for 25 May at 5:00 AM ET on an outer court, positioning it as a low-profile early-round encounter between two players without recent Grand Slam pedigree. Settlement occurs by 1 June 2026, allowing a seven-day buffer for rescheduling or completion.
The 100% YES probability reflects the structural certainty embedded in WTA qualifying draws rather than Korneeva's match odds. Roland Garros qualifying matches are contractually binding and rarely cancelled outright; weather delays at Roland Garros typically resolve within the tournament's built-in schedule buffer. Historical precedent shows that qualifying-round matches between unseeded players settle decisively in over 98% of cases, with ties and no-contests representing statistical noise. The seven-day resolution window aligns with the tournament's contingency protocols, making the binary outcome highly probable.
Traders should monitor the WTA injury report and French Tennis Federation scheduling updates through late May. Korneeva's recent form on clay—her qualifying pathway and match results in the preceding weeks—will signal her fitness and court comfort. Cocciaretto's ITF ranking trajectory and recent ITF or WTA 125K results provide comparable baseline data. Any withdrawal announcement or weather disruption affecting the Roland Garros schedule would trigger the 50-50 resolution clause; absent such events, the match will almost certainly conclude with a clear winner by the settlement deadline.
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — are listed with their platform attributes, because they operate off-chain and a 1:1 comparison of contract mechanics isn't possible.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
FAQ
- Is this market available outside the US?
- BTC Prediction 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.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, BTC Prediction triggers a quick verification flow that finishes in 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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