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
Iga Swiatek faces Emerson Jones in the women's draw at Roland Garros on 24 May 2026. The 2% implied probability for Jones reflects the substantial gap in ranking and clay-court pedigree between the two players. Swiatek, a three-time French Open champion, holds a career record on clay that few players on the WTA tour can match. Jones, whilst a developing talent, would need to produce a performance well above her typical level to overcome the world number one on her strongest surface.
Historical precedent suggests extreme underdogs at Roland Garros rarely materialise into upsets. When seeded players face unseeded opponents in early rounds at the French Open, the favourite advances in approximately 95% of matches. Swiatek's specific record against lower-ranked opponents on clay shows minimal variance—she has lost only twice to players outside the top 50 since 2022, both on hard courts. The 2% probability aligns closely with baseline upset rates for this matchup type rather than reflecting any recent form deterioration or injury concern.
Traders should monitor draw confirmation and any weather delays that might affect scheduling, though the settlement window extends to 31 May, providing a seven-day buffer. Swiatek's fitness status heading into the tournament warrants attention; she withdrew from Madrid in May 2024 with a shoulder issue. Court assignments and surface conditions at Roland Garros can occasionally favour unexpected players, though clay typically amplifies rather than diminishes Swiatek's advantages. Current sportsbook lines show Jones at 40–50 to 1 odds, slightly longer than the prediction market's implied probability, suggesting marginal value for Jones backers if confidence in her preparation is higher than consensus assumes.
Methodology
This page reviews Roland Garros WTA: Emerson Jones vs Iga Swiatek 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 PolyGram — the application we operate, where you trade directly against the Polymarket order book at 0% fees.
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
- 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 PolyGram?
- Zero. PolyGram 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, PolyGram triggers a quick verification flow that finishes in minutes.
Trade Roland Garros WTA: Emerson Jones vs Iga Swiatek on PolyGram
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