Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Best Prediction Markets Pick polygram.ink |
23% | 77% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Best Prediction Markets → |
Polymarket polymarket.com |
23% | 77% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Best Prediction Markets → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Best Prediction Markets → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Best Prediction Markets → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Best Prediction Markets → |
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 Best Prediction Markets.
Active sub-markets
| Roland Garros ATP: Flavio Cobolli vs Alexander Zverev | 23% Flavio Cobolli | 78% Alexander Zverev |
| Completed Match | 84% YES | 17% NO |
| Roland Garros ATP: Flavio Cobolli vs Alexander Zverev Set 1 Winner | 32% Cobolli | 68% Zverev |
| Roland Garros ATP: Flavio Cobolli vs Alexander Zverev Set 1 O/U 8.5 | 79% Over | 21% Under |
| Roland Garros ATP: Flavio Cobolli vs Alexander Zverev Match O/U 36.5 | 56% Over | 45% Under |
| Roland Garros ATP: Flavio Cobolli vs Alexander Zverev Total Sets: O/U 3.5 | 60% Over 3.5 | 41% Under 3.5 |
Market context
Flavio Cobolli, the Italian 23-year-old ranked around 30th on the ATP tour, faces Alexander Zverev in the second round of Roland Garros on 7 June 2026. Zverev, a two-time Grand Slam finalist and consistent top-five player, enters as the heavy favourite. The 23 per cent implied probability assigned to Cobolli reflects a substantial underdog position, though not an implausible one given the clay-court variables and Cobolli's improving trajectory on the surface.
Cobolli's record against top-ten opponents remains sparse, with limited head-to-head data against players of Zverev's calibre. Historical precedent suggests that unseeded Italian clay specialists occasionally trouble established seeds in early rounds, particularly when conditions favour aggressive baseline play. However, Zverev's experience in deep Grand Slam runs and superior ranking differential typically correlate with match outcomes at this stage. The 23 per cent probability sits notably higher than conventional sportsbook odds, which typically favour Zverev at around 75–80 per cent, suggesting prediction-market participants are pricing in modest upset potential.
Traders should monitor Zverev's fitness status leading into the tournament, as shoulder concerns have periodically affected his availability. Court conditions and draw positioning will influence match dynamics; clay favours Cobolli's development as a player, though Zverev's serve remains a significant advantage indoors or on faster surfaces. Any withdrawal or schedule disruption before 7 June would trigger the 50–50 resolution clause, creating tail-risk considerations for positions held through settlement on 14 June.
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 Best Prediction Markets, 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
- Is this market available outside the US?
- Best Prediction Markets 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.
- What does it cost to trade on Best Prediction Markets?
- Zero. Best Prediction Markets 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, Best Prediction Markets triggers a quick verification flow that finishes in minutes.
Trade Roland Garros ATP: Flavio Cobolli vs Alexander Zverev on Best Prediction Markets
Live order book, 0% fees, USDC settlement in seconds.
Trade on Best Prediction Markets →