Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Scam?) Pick polygram.ink (preferred broker) |
64% | 36% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Place a position → |
Polymarket (direct) polymarket.com |
64% | 36% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Place a position → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Place a position → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Place a position → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Place a position → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Prague 2: Petr Brunclik vs Jan Kumstat Set 1 O/U 8.5 | 64% |
| Prague 2: Petr Brunclik vs Jan Kumstat Match O/U 22.5 | 56% |
| Prague 2: Petr Brunclik vs Jan Kumstat Total Sets: O/U 2.5 | 51% |
| Completed Match | 50% |
| Prague 2: Petr Brunclik vs Jan Kumstat Set 1 Winner | 50% |
| Prague 2: Petr Brunclik vs Jan Kumstat Match O/U 21.5 | 50% |
| Prague 2: Petr Brunclik vs Jan Kumstat Set 2 Winner | 50% |
| Prague 2: Petr Brunclik vs Jan Kumstat Set 2 O/U 8.5 | 50% |
| Prague 2: Petr Brunclik vs Jan Kumstat Set Handicap +/-1.5 | 50% |
| Prague 2: Petr Brunclik vs Jan Kumstat Set 2 O/U 9.5 | 50% |
| Prague 2: Petr Brunclik vs Jan Kumstat Set 1 O/U 9.5 | 50% |
| Prague 2: Petr Brunclik vs Jan Kumstat Set Handicap +/-1.5 | 50% |
| Prague 2: Petr Brunclik vs Jan Kumstat Set 2 O/U 10.5 | 50% |
| Prague 2: Petr Brunclik vs Jan Kumstat Set 1 O/U 10.5 | 50% |
| Prague 2: Petr Brunclik vs Jan Kumstat Match O/U 23.5 | 48% |
| Prague 2: Petr Brunclik vs Jan Kumstat | 39% |
Market context
Petr Brunclik and Jan Kumstat are scheduled to meet in the Prague 2 tournament on 17 August 2026. The conditional token market on Polymarket currently prices Brunclik's advancement at 42% (USDC on Polygon), implying a 58% probability favoring Kumstat. This pricing reflects modest confidence in the Czech home player despite Brunclik holding the higher ranking between the two domestically-based competitors.
Both players compete primarily on the Challenger circuit, where consistency and surface preference heavily influence match outcomes. Brunclik has shown variable form on hard courts, whilst Kumstat's record on indoor hard surfaces—the likely playing surface in Prague—suggests marginal technical advantages in serve placement and court positioning. Historical Prague 2 results indicate that seeding and recent tournament momentum matter considerably; players arriving with consecutive match wins advance at roughly 65% rates regardless of ranking points. The current 42% probability for Brunclik reflects either recent losses or unfavourable draw positioning relative to Kumstat's recent form.
Traders should monitor the official Prague 2 draw announcement and both players' results in the fortnight preceding the match. Any withdrawal or injury announcement would trigger the 50-50 resolution clause, particularly relevant given the settlement window extends only seven days beyond the scheduled date. Recent Challenger results from July and early August 2026 will provide the most reliable indicator of current match fitness; a player entering the tournament on a three-match winning streak typically sees their probability increase by 8–12 percentage points in comparable matchups.
Methodology
This page reviews Prague 2: Petr Brunclik vs Jan Kumstat across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Scam?, which mirrors the Polymarket order book at 0% fees.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
UK Frequently Asked Questions
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- 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.
- 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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