Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Completed Match | 100% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate Set 1 O/U 8.5 | 100% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate Set Handicap +/-1.5 | 100% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate Game Spread +/-5.5 | 100% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate | 0% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate Set 2 Winner | 0% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate Total Sets: O/U 2.5 | 0% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate Match O/U 21.5 | 0% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate Set 2 O/U 8.5 | 0% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate Set 1 Winner | 0% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate Set Handicap +/-1.5 | 0% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate Match O/U 22.5 | 0% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate Set 2 O/U 9.5 | 0% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate Set 1 O/U 9.5 | 0% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate Match O/U 23.5 | 0% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate Set 1 O/U 10.5 | 0% |
| US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate Set 2 O/U 10.5 | 0% |
Market context
Jack Secord and Tristan Schoolkate met in US Open men’s qualifying on outdoor hard courts at the USTA Billie Jean King National Tennis Centre, with Schoolkate the higher-ranked player and the cleaner seedline reference point for a market that is still pricing little to no information into the contract. The draw placed Secord as a wild card against a player sitting around ATP No. 180, which usually makes a near-zero probability look more like a data gap than a true read on the match outcome.
Comparable qualifying ties at this stage often move on late court assignments, score updates, or a simple retirement/withdrawal rather than broad narrative shifts, so the key question is whether the match is completed and officially advanced within the settlement window. Because this market resolves on advancement, not straight-match completion, a walkover, cancellation, or unresolved result by 8 September would flip it to 50-50 under the contract terms.
The immediate catalysts are the official schedule, any order-of-play change, and the live score line from New York, since qualifying matches can be delayed, pushed between courts, or completed after the published start time. If the match has already begun, the only material triggers are finish status, retirement, or a later tournament ruling; absent that, the market should remain tethered to the on-court result rather than broader ATP or crypto moves.
Methodology
This page reads US Open, Qualification ATP: Jack Secord vs Tristan Schoolkate on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
UK Frequently Asked Questions
- What are crypto prediction markets?
- Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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