Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Best Prediction Markets UK Pick polygram.ink |
38% | 62% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Best Prediction Markets UK → |
Polymarket polymarket.com |
38% | 62% | 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
| O'Malley to win by KO/TKO? | 38% YES | 63% NO |
| Fight won by submission? | 13% YES | 87% NO |
| O/U 0.5 Rounds | 90% Over | 10% Under |
| Aiemann Zahabi vs. Sean O'Malley | 23% Aiemann Zahabi | 78% Sean O'Malley |
| Fight to Go the Distance? | 58% YES | 42% NO |
| Fight won by KO/TKO? | 42% YES | 58% NO |
Market context
Sean O'Malley faces Aiemann Zahabi in a bantamweight contest on the main card of UFC Freedom 250, scheduled for 14 June 2026. The market currently implies a 31% probability that Zahabi emerges victorious, suggesting sportsbooks and prediction-market participants favour O'Malley at roughly -130 moneyline odds. This represents a meaningful divergence from typical analyst consensus, which has historically weighted O'Malley's striking precision and fight IQ more heavily than the current crowd probability suggests.
Zahabi, training out of Tristar Gym in Montreal, brings a technical wrestling base and submission threat that has troubled strikers in the past. However, O'Malley's recent performances—particularly his striking volume and footwork improvements—have shifted the narrative in his favour across major sportsbooks. The 31% implied probability for Zahabi sits notably lower than pre-fight consensus assessments from MMA analysts, who typically place underdog fighters with legitimate grappling credentials at 35–40% in matchups against pure strikers. This gap suggests the prediction market may be overweighting O'Malley's recent form relative to stylistic matchup data.
Traders should monitor official UFC injury announcements and weight-cut confirmations in the week preceding the event, as both fighters have experienced camp disruptions in previous fight camps. Any changes to the card structure or scheduling—particularly if UFC Freedom 250 shifts dates or if either fighter withdraws—would trigger the 50-50 resolution clause. Recent reporting from MMA Junkie and ESPN MMA has confirmed both fighters are in active training camps as of late 2025, though no formal weigh-in schedule has been published beyond the standard UFC timeline.
Methodology
We track UFC Freedom 250: Aiemann Zahabi vs. Sean O'Malley (Bantamweight, Main Card) 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
- 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.
- 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 UK?
- Zero. Best Prediction Markets UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- 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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