Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Kalshi UK Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Kalshi UK → |
Polymarket polymarket.com |
100% | 0% | 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
Cerundolo, the Argentine ranked around 100th on the ATP tour, faces Landaluce, a Spanish player competing primarily on the Challenger circuit, in the opening round of Roland Garros on 30 May 2026. The Polymarket contract currently prices Cerundolo's advancement at 67 cents per USDC token on Polygon, reflecting a straightforward seeding advantage: Cerundolo holds a ranking edge and Grand Slam main-draw experience that Landaluce, as a qualifier or lucky loser, would lack. The conditional token mechanics here are binary—either Cerundolo wins in straight or extended sets and the YES token settles to $1, or Landaluce upsets and the NO token converts, with a 50-50 split only if the match is cancelled or unresolved beyond seven days.
Cerundolo's recent form matters more than historical head-to-head records, as these players rarely meet. His 2025–26 season trajectory on clay—particularly results at lower-tier ATP events and Challenger tournaments—will signal whether he can sustain pressure across five sets. Landaluce's path to the main draw and his recent match outcomes against comparable opposition provide the counter-narrative; Spanish clay specialists have occasionally troubled higher-ranked Argentines, though Landaluce's ranking suggests he remains a significant underdog.
The settlement window closes 9 June 2026, allowing six days past the scheduled date for weather delays or administrative postponements common at Roland Garros. Traders should monitor the official ATP draw confirmation and any late withdrawals or injury announcements in the week before the tournament begins.
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
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
- 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.
- 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.
- 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.
- 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: Juan Manuel Cerundolo vs Martin L… on Kalshi UK
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