Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
97% | 3% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
97% | 3% | 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
Francisco Cerundolo and Botic van de Zandschulp are scheduled to meet in the first or second round of Roland Garros in late May 2026. The match carries a 97% crowd-implied probability favouring Cerundolo's advancement, reflecting his higher ATP ranking and recent form on clay courts. Van de Zandschulp, a Dutch player with a solid baseline game, has shown inconsistency on the professional tour and faces a significant seeding disadvantage in this fixture.
Historical precedent suggests markets pricing clay-court matches at this probability level typically resolve correctly when the higher-ranked player is favoured. Cerundolo's record on Roland Garros surfaces and his performance in spring ATP 500 events provide a reasonable foundation for the crowd's confidence. However, first-round upsets at Grand Slams occur in roughly 8–12% of matches involving players ranked outside the top 50, and van de Zandschulp's serve-and-volley tendencies occasionally disrupt favoured opponents on slower surfaces. The settlement window extends to 31 May, allowing seven days beyond the scheduled 24 May date for completion or rescheduling.
Key dependencies include weather delays at Roland Garros, which frequently compress schedules and affect player fatigue across multiple rounds. Tournament draw confirmation and any late withdrawals will be announced through ATP and FFT official channels in early May. USDC settlement mechanics on btc-prediction.bet will trigger upon match completion and official confirmation, with the 50-50 tie resolution clause applying only if play is abandoned entirely or extends beyond the seven-day buffer without a decisive result.
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
- 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.
- 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.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.
Trade Roland Garros ATP: Francisco Cerundolo vs Botic van … on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
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