Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Kalshi UK Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Kalshi UK → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Kalshi UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Kalshi UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Kalshi UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Kalshi UK → |
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 Kalshi UK.
Active sub-markets
Market context
Polymarket's conditional token structure currently prices Duckworth's advancement at zero, reflecting either extreme confidence in Jodar or, more likely, minimal liquidity and trading activity on this particular first-round matchup. The market settles on 3 June 2026, giving a one-week buffer beyond the scheduled 27 May encounter at Roland Garros. With no YES positions trading at any price, the contract sits in a state of near-total inactivity—typical for lower-ranked ATP qualifying or early-round fixtures where retail traders concentrate capital on seeded players and marquee names.
Duckworth, an Australian ranked outside the top 100 in recent seasons, has contested Roland Garros main draws but lacks the consistency to generate sustained market interest. Jodar, a Spanish player with limited ATP exposure, similarly occupies the periphery of professional tennis where match outcomes depend heavily on form, injury status, and draw positioning rather than established reputation. Historical patterns show such pairings attract meaningful trading volume only if one player reaches a later round or if injury news surfaces; otherwise, the 50-50 tie resolution clause becomes the practical floor for pricing.
Traders monitoring this contract should track Roland Garros draw confirmations and any injury bulletins released in late May 2026. The ATP's official draw publication typically occurs one week before the tournament. Withdrawal announcements or late substitutions could alter market structure entirely. Until then, the zero probability reflects rational indifference rather than genuine conviction about Jodar's superiority—a distinction worth noting for anyone considering liquidity provision on Polygon.
Methodology
This page reviews Roland Garros ATP: James Duckworth vs Rafael Jodar 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 Kalshi UK — 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
- 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 Kalshi UK?
- Zero. Kalshi UK 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, Kalshi UK triggers a quick verification flow that finishes in minutes.
Trade Roland Garros ATP: James Duckworth vs Rafael Jodar on Kalshi UK
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