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 pricing reflects substantial confidence in Francisco Comesana's advancement, with Quinn's contract trading at 1% implied probability on USDC-denominated positions settled on Polygon. The match represents a qualifying or early-round encounter at Roland Garros scheduled for 24 May 2026, where the settlement window extends to 31 May to accommodate potential delays inherent to clay-court tournaments. Current pricing suggests market participants view this as a heavily favoured outcome for Comesana, though the 1% floor reflects baseline uncertainty rather than genuine competitive parity.
Historical precedent indicates that early-round ATP matches at Roland Garros rarely produce significant upsets when seeding or ranking disparities are substantial. Quinn and Comesana occupy different tiers of professional tennis; Comesana has established a more consistent record on clay surfaces and within European tournaments, whilst Quinn's trajectory remains developmental. The 99-1 split aligns with typical Polymarket pricing for matches between players separated by meaningful ranking gaps, where conditional token liquidity concentrates heavily on the favoured outcome.
Traders should monitor official Roland Garros draw confirmation and any injury announcements in the fortnight preceding the match. Weather disruptions on clay courts can extend tournament schedules, potentially triggering the 50-50 resolution clause if the match remains unplayed beyond seven days from 24 May. Recent ATP injury reports and surface-specific performance data from spring clay tournaments will provide concrete catalysts for any probability reassessment before settlement closes on 31 May.
Methodology
We track Roland Garros ATP: Ethan Quinn vs Francisco Comesana 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 Kalshi 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.
- 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 Kalshi UK?
- Zero. Kalshi UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- 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.
Trade Roland Garros ATP: Ethan Quinn vs Francisco Comesana on Kalshi UK
Live order book, 0% fees, USDC settlement in seconds.
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