Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner | 100% |
| Completed Match | 100% |
| Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner Set 1 O/U 8.5 | 100% |
| Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner Set 1 Winner | 100% |
| Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner Set Handicap +/-1.5 | 100% |
| Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner Set 2 Winner | 100% |
| Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner Set 1 O/U 9.5 | 100% |
| Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner Set 1 O/U 10.5 | 100% |
| Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner Total Sets: O/U 2.5 | 0% |
| Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner Match O/U 21.5 | 0% |
| Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner Set 2 O/U 8.5 | 0% |
| Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner Match O/U 22.5 | 0% |
| Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner Set Handicap +/-1.5 | 0% |
| Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner Set 2 O/U 9.5 | 0% |
| Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner Match O/U 23.5 | 0% |
| Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner Set 2 O/U 10.5 | 0% |
Market context
Jacob Fearnley’s qualifying match against Sebastian Ofner is already under way in Montreal, and the market’s 100% ‘YES’ price largely reflects that the result is effectively being treated as settled rather than speculative. Live and tournament pages show Fearnley ahead and list the match on outdoor hard courts at the National Bank Open qualifying event, with Fearnley ranked around ATP 110 and Ofner around ATP 124 at the time of play.[2][8][9] That combination makes the contract look much more like a near-certain outcome than a live coin-flip, even if different platforms update at slightly different speeds.[1][6]
The historical frame matters because these first-round qualifying matches can look similar on paper while still producing price dispersion across venues. Comparable coverage from tennis results sites shows Fearnley beating Ofner in straight sets, 7-6(3), 6-2, with RotoWire also crediting Fearnley as the winner on match stats and tennis.com recording the qualifying round as completed.[9][17] In that context, prediction-market pricing at 100% sits well above the implied probabilities usually associated with a typical ATP qualifier between closely ranked players, which is consistent with a result that has already been confirmed on the public scoreboards rather than merely forecast by traders.[2][16]
The main catalysts for traders are administrative rather than sporting: official match completion, any correction to the live score, or an unusual change in status such as retirement, walkover, or a restart after suspension. The National Bank Open scoreboard and third-party live trackers are the key references because settlement depends on whether Fearnley is officially recorded as having advanced against Ofner, not on pre-match expectations or mid-match momentum.[8][2][6] If there were any disagreement between sportsbook listings, live scores, and market pricing, the final tournament result would be the decisive input.[8][16]
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
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
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- 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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- 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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