Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Best Prediction Markets UK Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Best Prediction Markets UK → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Best Prediction Markets UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Best Prediction Markets UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Best Prediction Markets UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Best Prediction Markets 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 Best Prediction Markets UK.
Active sub-markets
Market context
James Duckworth, the Australian left-hander 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, a slot typical for early-round encounters at the clay-court Grand Slam. Duckworth has competed sporadically on the ATP tour in recent seasons, whilst Jodar remains a fringe professional with limited Grand Slam experience. The 0% implied probability on this contract reflects either extremely low liquidity or a technical settlement condition that traders perceive as highly probable—most likely the match being cancelled, delayed beyond the seven-day window, or ending in a retirement before completion.
Historical precedent suggests early-round Grand Slam matches between lower-ranked players carry genuine cancellation risk. Weather delays at Roland Garros frequently push matches beyond scheduled dates, and player withdrawals due to injury or illness occur in roughly 2–3% of first-round contests. The settlement rules here create a 50-50 outcome if the match is postponed more than a week without resolution, which meaningfully reduces the probability of either player advancing from the baseline expectation.
Traders should monitor ATP injury reports and draw confirmations in early May 2026, as either player's withdrawal would trigger immediate resolution. Sportsbooks typically offer minimal odds on such low-seeded matchups, making direct comparison difficult. The current zero probability suggests the market has priced in either a high likelihood of non-completion or extremely thin trading depth; confirmation of both players' fitness and participation status closer to the event date would be the primary catalyst for meaningful probability movement.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.
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
- Where can I trade this market with the lowest fees?
- On Best Prediction Markets 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?
- Best Prediction Markets 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.
- What does it cost to trade on Best Prediction Markets UK?
- Zero. Best Prediction Markets 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.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
Trade Roland Garros ATP: James Duckworth vs Rafael Jodar on Best Prediction Markets UK
Live order book, 0% fees, USDC settlement in seconds.
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