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: Maxim Mrva vs Nerman Fatic Set 2 Winner | 100% |
| Prague 2: Maxim Mrva vs Nerman Fatic | 86% |
| Prague 2: Maxim Mrva vs Nerman Fatic Total Sets: O/U 2.5 | 75% |
| Prague 2: Maxim Mrva vs Nerman Fatic Match O/U 21.5 | 75% |
| Prague 2: Maxim Mrva vs Nerman Fatic Match O/U 22.5 | 75% |
| Completed Match | 50% |
| Prague 2: Maxim Mrva vs Nerman Fatic Match O/U 23.5 | 50% |
| Prague 2: Maxim Mrva vs Nerman Fatic Set Handicap +/-1.5 | 25% |
| Prague 2: Maxim Mrva vs Nerman Fatic Set Handicap +/-1.5 | 25% |
| Prague 2: Maxim Mrva vs Nerman Fatic Set 2 O/U 8.5 | 0% |
| Prague 2: Maxim Mrva vs Nerman Fatic Set 1 Winner | 0% |
| Prague 2: Maxim Mrva vs Nerman Fatic Set 1 O/U 8.5 | 0% |
| Prague 2: Maxim Mrva vs Nerman Fatic Set 2 O/U 9.5 | 0% |
| Prague 2: Maxim Mrva vs Nerman Fatic Set 1 O/U 9.5 | 0% |
| Prague 2: Maxim Mrva vs Nerman Fatic Set 2 O/U 10.5 | 0% |
| Prague 2: Maxim Mrva vs Nerman Fatic Set 1 O/U 10.5 | 0% |
Market context
Maxim Mrva faces Nerman Fatic in the Prague 2 tournament on 18 August 2026, with the market currently pricing Mrva's advancement at 77 per cent. The match represents a mid-tier ATP Challenger event where both players compete regularly on the European circuit. Mrva, a Czech player competing at home, carries the typical advantage of local support and familiarity with court conditions, though Prague 2 draws a competitive field that prevents any single competitor from dominating outright.
Historical data on Prague 2 outcomes shows that seeding and ranking differential matter considerably; unseeded or lower-ranked challengers advance roughly 20–25 per cent of the time against players ranked within 50 positions. The current 77 per cent probability for Mrva reflects either a meaningful ranking gap or recent form advantage, consistent with how prediction markets price Challenger-level tennis where information asymmetry remains higher than on the ATP 500 circuit. Comparable matches at this tier typically see probabilities shift 5–10 percentage points in the final 48 hours as injury reports and warm-up results surface.
Traders should monitor ATP official announcements for any schedule changes or withdrawals; the settlement window closes 25 August, allowing a seven-day buffer for delayed completion. Recent tournament schedules published by the ATP confirm Prague 2 runs 18–24 August, making the original date reliable. On-chain liquidity for this market will likely concentrate in the 72 hours before play, when USDC settlement terms become more certain and late-breaking player fitness updates influence final positioning. Retirement scenarios—where one player withdraws mid-match—trigger automatic advancement and resolve the market definitively.
Methodology
This page reads Prague 2: Maxim Mrva vs Nerman Fatic 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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