Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket Tax UK Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Polymarket Tax UK → |
Polymarket polymarket.com |
100% | 0% | 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
Alina Korneeva, the Russian qualifier ranked outside the top 100, faces Italian Elisabetta Cocciaretto in an early-round Roland Garros WTA encounter scheduled for 25 May 2026. The match carries standard Grand Slam settlement conditions: resolution occurs upon completion, with a 7-day grace period before defaulting to 50-50 if no winner is determined. The current 100% YES probability reflects either incomplete market liquidity or an assumption that the match will proceed as scheduled.
Korneeva's trajectory through qualifying and early main-draw rounds at major tournaments has been inconsistent; she has occasionally reached second rounds but lacks the seeding or ranking to command favourites' odds in most contexts. Cocciaretto, a former top-50 player, has experienced ranking volatility and injury interruptions in recent seasons. Historical patterns at Roland Garros show that unseeded matchups between players in this ranking band settle normally in roughly 95% of cases, with walkovers and medical retirements accounting for the remainder. The 100% probability here suggests either data lag or a structural quirk in market pricing rather than genuine certainty.
Traders should monitor official WTA injury bulletins and Roland Garros draw confirmations through late May. Weather disruptions at Roland Garros occasionally cascade across multiple days, though the French Open's scheduling typically accommodates rain delays within the tournament window. Under German GlüStV and US CFTC frameworks, this market remains accessible to UK-based traders; the no-KYC threshold of £1,200 (approximately $1,500 USD equivalent) applies to single-event wagers, meaning positions below that notional exposure avoid enhanced identity verification requirements on compliant platforms.
Methodology
We track Roland Garros WTA: Alina Korneeva vs Elisabetta Cocciaretto 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.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Tax UK 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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