Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
BTC Prediction Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on BTC Prediction → |
Polymarket polymarket.com |
0% | 100% | 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
Arthur Rinderknech and Matteo Berrettini are scheduled to meet in the first or early round of the 2026 Roland Garros ATP draw on 27 May. The match carries a 0% implied probability for Rinderknech, suggesting the market has assigned near-certain status to Berrettini. Settlement occurs on 3 June, allowing a six-day window for completion; any match unfinished beyond that triggers a 50-50 resolution regardless of play status.
Berrettini's ranking and seeding advantage explain the extreme probability skew. The Italian has maintained top-50 status consistently and reached multiple Grand Slam quarter-finals, whilst Rinderknech, a French qualifier-level competitor, sits considerably lower in the ATP rankings. Historical clay-court matchups between players of this calibre differential rarely produce upsets; Berrettini's serve and baseline game translate well to Roland Garros conditions. The 0% reading reflects rational expectation-setting rather than genuine uncertainty about outcome likelihood.
Traders should monitor ATP injury reports and draw confirmation closer to the tournament start. Berrettini's recent form on clay—particularly results from warm-up events in May—will signal whether the market's confidence remains justified. Any withdrawal or late substitution would trigger the 50-50 clause. USDC settlement mechanics on btc-prediction.bet mean position holders face no slippage risk once the match concludes, though early liquidity may remain thin given the heavily skewed probability. The scheduled 5:00 AM ET start time is atypical; confirmation of actual court assignment and timing should be verified against official Roland Garros scheduling updates.
Methodology
This page reads Roland Garros ATP: Arthur Rinderknech vs Matteo Berrettini on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed for comparison. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
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
- Where can I trade this market with the lowest fees?
- On BTC Prediction, 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.
- 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 BTC Prediction?
- Zero. BTC Prediction routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- 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.
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