Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Best Prediction Markets UK Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Best Prediction Markets UK → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Best Prediction Markets UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Best Prediction Markets UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Best Prediction Markets UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Best Prediction Markets 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 Best Prediction Markets UK.
Active sub-markets
Market context
The underlying event is the ATP Mallorca semifinals grass-court match between Fabian Marozsan and Alejandro Davidovich Fokina, scheduled for 08:30 ET on 26 June 2026 at Santa Ponsa Tennis Academy. Marozsan, ranked ATP 62, faces Fokina, ranked ATP 25, with the Spaniard holding a 1-0 head-to-head lead from a three-set Dubai victory two years ago. Fokina boasts a stronger grass record (19-17) compared to Marozsan’s (9-13), making him the clear favourite to reach the final despite the tight contest anticipated by analysts.
Historical precedents in grass-court semifinals show that a 1-0 head-to-head advantage rarely guarantees the outcome when the lower-ranked player has improving grass form, yet current prediction-market implied probability sits at 100% YES for Marozsan advancing—a stark divergence from sportsbook lines where Fokina wins 2-0 at +105 and Marozsan 2-0 at +430. Analyst consensus from Last Word on Sports and The Stats Zone predicts Marozsan in three sets, but Fokina remains the huge favourite to progress, suggesting the 100% market probability may reflect a mispricing or a specific contract condition rather than pure match odds.
Traders should monitor live streaming updates on CENTER COURT and any schedule changes, as the match could be delayed beyond seven days without a winner, triggering a 50-50 resolution. Recent coverage from TennisTonic confirms the 5:30 pm local start time, while ATP Tour highlights show both players advanced to the semis after quarter-final action. Key dependencies include weather conditions on the outdoor grass surface and potential injury announcements, with no major news sources yet indicating a cancellation, though the odds divergence warrants close scrutiny of real-time market movements.
Methodology
We track Mallorca Championships: Fabian Marozsan vs Alejandro Davidovich Fokina 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
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
- Where can I trade this market with the lowest fees?
- On Best Prediction Markets 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?
- Best Prediction Markets 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.
- 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.
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