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
Polymarket's conditional token pricing reflects a 2% implied probability for Emerson Jones to defeat Iga Swiatek at Roland Garros in May 2026, with USDC settlement on Polygon. This valuation sits at the extreme tail of the distribution, pricing Jones as a substantial underdog despite her status as a professional competitor. The market's current odds suggest traders assess this matchup as heavily favourable to the Polish world number one, whose recent form and clay-court dominance have established her as a dominant force in women's tennis.
Swiatek's record at Roland Garros provides the primary historical context for reading this probability. She won the tournament in 2022 and has consistently reached deep stages, whilst Jones remains a lower-ranked player without comparable Grand Slam pedigree. Comparable upsets at Roland Garros—where seeding occasionally produces mismatches—occur at rates substantially higher than 2%, suggesting the market may be pricing in Swiatek's specific advantages rather than baseline upset frequency. The conditional token structure means traders holding YES positions require both the match completion and Jones's victory to settle profitably.
Traders should monitor the official Roland Garros draw confirmation and any injury announcements affecting either player in the weeks preceding the tournament. Scheduling changes, weather delays, or withdrawal news could trigger the 50-50 resolution clause if the match extends beyond seven days without completion. Swiatek's preparation schedule and any coaching changes heading into the clay season will likely influence market repricing, as will Jones's performance in qualifying rounds or warm-up tournaments beforehand.
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
- Is this market available outside the US?
- PolyGram 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.
- 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.
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