Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Kalshi UK Pick polygram.ink |
56% | 44% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Kalshi UK → |
Polymarket polymarket.com |
56% | 44% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Kalshi UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Kalshi UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Kalshi UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Kalshi 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 Kalshi UK.
Active sub-markets
Market context
Vit Kopriva, the Czech qualifier ranked outside the top 200, faces Corentin Moutet in the opening round of Roland Garros on 24 May 2026. Polymarket prices this contract at 65% for Kopriva, reflecting the conditional token mechanics on Polygon where traders hold USDC-backed positions through settlement on 31 May. The market implies roughly two-to-one odds favouring the lower-seeded player, a notable positioning given Moutet's established ATP ranking and French home advantage at Roland Garros.
Moutet's recent form and court familiarity typically anchor clay-court matchups at the French Open. The 26-year-old French player has contested multiple main-draw rounds at Roland Garros and maintains a clay-court win rate substantially above his hard-court record. Kopriva's path through qualifying suggests baseline consistency but limited exposure to top-50 opposition. Historical data on qualifier-versus-ranked-player encounters at Roland Garros shows the seeded player advances in roughly 70–75% of first-round contests, which sits notably above the current 35% probability assigned to Moutet on this contract.
Traders should monitor official Roland Garros scheduling confirmations and any late withdrawals in the week preceding 24 May, as weather delays or injury scratches could trigger the 50-50 tie-break clause if the match extends beyond seven days without completion. Court assignment and surface conditions—particularly clay moisture and temperature—historically shift clay-court probabilities by 5–10 percentage points. Polymarket's current pricing may reflect uncertainty around Kopriva's recent qualifying performance or algorithmic weighting of underdog sentiment rather than strict historical precedent.
Methodology
This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi UK, which mirrors the Polymarket order book directly.
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
- Is this market available outside the US?
- Kalshi 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.
- 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, Kalshi 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.
Trade Roland Garros ATP: Vit Kopriva vs Corentin Moutet on Kalshi UK
Live order book, 0% fees, USDC settlement in seconds.
Trade on Kalshi UK →