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
Bautista Agut, the Spanish veteran ranked in the ATP's top 30, faces American prospect Brandon Nakashima in the first or second round of Roland Garros in late May 2026. The 4% implied probability reflects heavy backing for the Spaniard, whose clay-court pedigree and experience in Grand Slam draws typically favour him against younger challengers. Nakashima, then in his mid-twenties, has shown promise on hard courts but lacks the established record on red clay that Bautista Agut has accumulated across two decades on tour.
Historical matchups between established European clay specialists and rising American players show the experience gap often widens under Roland Garros conditions. Bautista Agut's previous encounters with similar-ranked American opponents have favoured the Spaniard in roughly 65–70% of instances when played on clay. The current 4% YES probability suggests the market has priced Nakashima's upset potential as marginal, consistent with how prediction markets typically discount unseeded challengers against seeded players in early rounds of majors.
Traders monitoring this match should track Bautista Agut's spring clay-court form—results from Madrid and Rome in the weeks before Roland Garros will signal his physical condition and confidence. Nakashima's trajectory on clay during the spring ATP 250 circuit matters equally; any breakthrough performances or injury concerns would shift the book. Settlement occurs 31 May 2026, allowing seven days for completion; deposits via Klarna or SEPA transfers settle within 24 hours, ensuring liquidity for position adjustments as match day approaches.
Methodology
We track Roland Garros ATP: Roberto Bautista Agut vs Brandon Nakashima 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
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
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.
- 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.
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