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 |
|---|---|
| Prague 2: Norbert Gombos vs Sean Cuenin Set 2 Winner | 100% |
| Prague 2: Norbert Gombos vs Sean Cuenin Set 1 O/U 8.5 | 100% |
| Prague 2: Norbert Gombos vs Sean Cuenin Set 2 O/U 8.5 | 100% |
| Prague 2: Norbert Gombos vs Sean Cuenin Set 1 O/U 9.5 | 100% |
| Prague 2: Norbert Gombos vs Sean Cuenin Set 1 O/U 10.5 | 100% |
| Prague 2: Norbert Gombos vs Sean Cuenin Match O/U 21.5 | 75% |
| Prague 2: Norbert Gombos vs Sean Cuenin Total Sets: O/U 2.5 | 75% |
| Prague 2: Norbert Gombos vs Sean Cuenin Match O/U 22.5 | 75% |
| Prague 2: Norbert Gombos vs Sean Cuenin Match O/U 23.5 | 75% |
| Prague 2: Norbert Gombos vs Sean Cuenin | 73% |
| Completed Match | 50% |
| Prague 2: Norbert Gombos vs Sean Cuenin Set Handicap +/-1.5 | 25% |
| Prague 2: Norbert Gombos vs Sean Cuenin Set Handicap +/-1.5 | 25% |
| Prague 2: Norbert Gombos vs Sean Cuenin Set 1 Winner | 0% |
| Prague 2: Norbert Gombos vs Sean Cuenin Set 2 O/U 9.5 | 0% |
| Prague 2: Norbert Gombos vs Sean Cuenin Set 2 O/U 10.5 | 0% |
Market context
Norbert Gombos, the Slovak left-hander ranked around 150th on the ATP tour, faces American qualifier Sean Cuenin in the Prague 2 tournament scheduled for 19 August 2026. The match forms part of the ATP 250 event held annually in the Czech capital. Gombos has competed consistently on the secondary tour circuit, whilst Cuenin, a lower-ranked American, typically contests Challenger events and qualifying draws. The 73% crowd-implied probability favours Gombos, reflecting his higher ranking and seeding status within the draw structure.
Historical ATP 250 matchups between players of this ranking differential—roughly 100+ positions apart—settle towards the higher-ranked player approximately 70–75% of the time, accounting for surface preference, recent form variance, and home-court effects. Prague's hard courts have historically favoured baseline grinders over serve-dominant players, a dynamic that may favour Gombos's playing style. Cuenin's path through qualifying would require consecutive wins against established Challenger competitors, a conditioning factor that influences fatigue metrics in early-round matchups.
Traders should monitor ATP injury bulletins and withdrawal announcements through the week preceding 19 August, particularly given the tournament's proximity to the US Open season when players often manage workload. Prague 2 typically confirms final draws 48 hours before play. The settlement window extends to 26 August, providing a seven-day buffer for delayed matches or administrative clarifications. USDC settlement on btc-prediction.bet will execute once official ATP records confirm match outcome, with no tie-break resolution mechanics applicable to standard ATP play.
Methodology
This page reads Prague 2: Norbert Gombos vs Sean Cuenin 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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