Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
2% | 98% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
2% | 98% | 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
Polymarket currently prices an Emerson Jones victory at 2%, reflecting the substantial gap in ranking and recent form between the Australian qualifier and Poland's Iga Swiatek. The match is scheduled for 24 May 2026 at Roland Garros, with settlement occurring if a winner is determined by 31 May. On-chain, this conditional token pair trades on Polygon via USDC, with the 98% implied probability favouring Swiatek reflecting her status as a three-time French Open champion and consistent top-5 player on clay.
Historical context suggests such disparities rarely narrow unless injury or exceptional circumstances intervene. Swiatek has won 11 of her past 12 matches at Roland Garros across all rounds, whilst Jones, ranked outside the top 100, would need to execute a near-flawless performance on clay—a surface where elite players typically dominate qualifiers. The 2% probability aligns with outcomes seen in comparable mismatches: Serena Williams versus lower-ranked opponents at majors typically settled at similar odds, with upsets occurring in fewer than 3% of cases.
Traders should monitor the official Roland Garros draw confirmation and any late withdrawals from either player. Swiatek's recent form through spring tournaments and any injury reports in the week preceding 24 May will influence conditional token pricing. Weather delays at Roland Garros have historically extended matches beyond scheduled dates; the 7-day resolution window provides buffer against minor scheduling shifts, though extended rain could trigger the 50-50 tie-break clause if play remains incomplete.
Methodology
We track Roland Garros WTA: Emerson Jones vs Iga Swiatek 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
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.
- 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.
- 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.
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