Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) 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 |
|---|---|
| Prague 2: Filip Jianu vs Andrej Martin | 100% |
| Completed Match | 100% |
| Prague 2: Filip Jianu vs Andrej Martin Set 1 Winner | 100% |
| Prague 2: Filip Jianu vs Andrej Martin Set Handicap +/-1.5 | 100% |
| Prague 2: Filip Jianu vs Andrej Martin Set 2 Winner | 100% |
| Prague 2: Filip Jianu vs Andrej Martin Set 1 O/U 8.5 | 0% |
| Prague 2: Filip Jianu vs Andrej Martin Match O/U 21.5 | 0% |
| Prague 2: Filip Jianu vs Andrej Martin Set 2 O/U 8.5 | 0% |
| Prague 2: Filip Jianu vs Andrej Martin Total Sets: O/U 2.5 | 0% |
| Prague 2: Filip Jianu vs Andrej Martin Set 1 O/U 9.5 | 0% |
| Prague 2: Filip Jianu vs Andrej Martin Match O/U 22.5 | 0% |
| Prague 2: Filip Jianu vs Andrej Martin Set Handicap +/-1.5 | 0% |
| Prague 2: Filip Jianu vs Andrej Martin Set 2 O/U 9.5 | 0% |
| Prague 2: Filip Jianu vs Andrej Martin Set 1 O/U 10.5 | 0% |
| Prague 2: Filip Jianu vs Andrej Martin Match O/U 23.5 | 0% |
| Prague 2: Filip Jianu vs Andrej Martin Set 2 O/U 10.5 | 0% |
Market context
Filip Jianu and Andrej Martin are scheduled to meet in the Prague 2 tournament on 18 August 2026. The match represents a lower-tier ATP Challenger event, where both players typically compete for ranking points and match fitness. Jianu, a Czech player competing on home soil, holds a modest career record against Martin, a Slovak competitor who has shown inconsistent form across Challenger circuits. The 100% implied probability suggests market participants view this fixture as highly likely to proceed as scheduled, though Prague Challenger events have occasionally faced weather delays or scheduling adjustments in August.
Historical precedent for Prague Challenger matches shows cancellation rates below 3% when scheduled within the August window, with most disruptions stemming from player injury withdrawals rather than external factors. Martin has withdrawn from scheduled matches twice in the past eighteen months, whilst Jianu has maintained better availability. The settlement window extends seven days beyond the original date, providing reasonable buffer for rescheduling without triggering a 50-50 resolution.
Traders should monitor both players' entries in the week preceding 18 August, particularly any injury announcements or late withdrawals from preceding tournaments. Czech Tennis Association updates and ATP Challenger official draws, typically published five days before the event, will confirm final participation. Weather forecasts for Prague in mid-August historically show low rain probability, though occasional thunderstorms can affect scheduling. Any announcement of coaching changes or significant fitness concerns from either player's camp would shift the underlying match dynamics, though the current probability already reflects baseline expectation of match completion.
Methodology
Sports-specific comparison page for Prague 2: Filip Jianu vs Andrej Martin. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
UK Frequently Asked Questions
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- What are live sports odds on Polymarket?
- Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
- 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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