Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Kalshi UK Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Kalshi UK → |
Polymarket polymarket.com |
0% | 100% | 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
Polymarket's conditional token structure currently prices Muller's advancement at zero, reflecting the market's near-total confidence in Tsitsipas progressing from their first-round Roland Garros encounter scheduled for 24 May 2026. The USDC-settled contract on Polygon shows no meaningful liquidity backing an upset, with the spread between YES and NO tokens reflecting the seeding disparity and recent form differential between the two players.
Tsitsipas enters as a three-time Grand Slam finalist and consistent top-ten performer, whilst Muller, a Swiss qualifier or lower-ranked entrant, would represent a significant upset in the tournament's opening round. Historical precedent at Roland Garros shows that seeded players of Tsitsipas's calibre advance in roughly 85–90% of first-round matchups against unranked or marginally-ranked opponents. The 0% implied probability suggests traders view this as a near-certainty rather than a genuine wager, typical of markets where one competitor holds overwhelming structural advantages.
Key variables for position holders include Tsitsipas's fitness status heading into the tournament, court conditions on clay that might favour Muller's game, and any late withdrawals or schedule disruptions. The settlement window extends to 31 May, providing a seven-day buffer beyond the scheduled date; any match postponement beyond that threshold would trigger a 50-50 resolution. Recent ATP injury reports and Tsitsipas's preparation schedule in the weeks before Roland Garros will determine whether the current pricing holds or whether conditional token holders see meaningful movement.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
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.
- 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.
- 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: Alexandre Muller vs Stefanos Tsit… on Kalshi UK
Live order book, 0% fees, USDC settlement in seconds.
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