Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket Tax UK Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Polymarket Tax UK → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Polymarket Tax UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Polymarket Tax UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Polymarket Tax UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Polymarket Tax 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 Polymarket Tax UK.
Active sub-markets
Market context
James Duckworth, the Australian professional ranked outside the top 100, faces Rafael Jodar of Spain in the opening round of Roland Garros in late May 2026. The match is scheduled for 5:00 AM ET on 27 May, placing it in the early-morning slot typical of Grand Slam qualifiers or lower-seeded encounters. The 0% implied probability reflects either minimal trading volume or strong consensus that Duckworth is heavily favoured, though the settlement window extends to 3 June, allowing six days beyond the scheduled date for completion or resolution under the tie-break rules.
Historical patterns in ATP qualifying and first-round matches show that seeding disparities and ranking gaps often compress when players meet on clay. Duckworth has competed sporadically at Roland Garros; Jodar remains largely untracked in major tournament databases. The extreme probability skew suggests either one player carries a decisive ranking advantage or the market has received limited participation. Comparable early-round ATP matches at majors typically settle within 48 hours unless weather or injury intervenes, making the 7-day grace period a safeguard rather than an expected outcome.
Traders should monitor official Roland Garros draw confirmations and any injury bulletins released in the week prior to 27 May. Court assignments and weather forecasts for early-morning slots on clay can affect match completion. Under German GlüStV regulations, this market remains accessible to EU traders without KYC up to €1,500 cumulative exposure; US CFTC reach applies only if the platform is registered or if traders are US-based, in which case no-KYC thresholds do not apply. The settlement window's extension to 3 June accommodates potential delays without triggering the 50-50 resolution unless play remains unfinished beyond that date.
Methodology
We track Roland Garros ATP: James Duckworth vs Rafael Jodar 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
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- Where can I trade this market with the lowest fees?
- On Polymarket Tax UK, 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?
- Polymarket Tax UK 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.
- 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.
Trade Roland Garros ATP: James Duckworth vs Rafael Jodar on Polymarket Tax UK
Live order book, 0% fees, USDC settlement in seconds.
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