Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) 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 |
|---|---|
| Completed Match | 100% |
| Prague 2: Gilles Arnaud Bailly vs Norbert Gombos Set 1 Winner | 100% |
| Prague 2: Gilles Arnaud Bailly vs Norbert Gombos Total Sets: O/U 2.5 | 100% |
| Prague 2: Gilles Arnaud Bailly vs Norbert Gombos Set 1 O/U 8.5 | 100% |
| Prague 2: Gilles Arnaud Bailly vs Norbert Gombos Match O/U 21.5 | 100% |
| Prague 2: Gilles Arnaud Bailly vs Norbert Gombos Set 1 O/U 9.5 | 100% |
| Prague 2: Gilles Arnaud Bailly vs Norbert Gombos Match O/U 22.5 | 100% |
| Prague 2: Gilles Arnaud Bailly vs Norbert Gombos Match O/U 23.5 | 100% |
| Prague 2: Gilles Arnaud Bailly vs Norbert Gombos | 0% |
| Prague 2: Gilles Arnaud Bailly vs Norbert Gombos Set 2 Winner | 0% |
| Prague 2: Gilles Arnaud Bailly vs Norbert Gombos Set 2 O/U 8.5 | 0% |
| Prague 2: Gilles Arnaud Bailly vs Norbert Gombos Set Handicap +/-1.5 | 0% |
| Prague 2: Gilles Arnaud Bailly vs Norbert Gombos Set 2 O/U 9.5 | 0% |
| Prague 2: Gilles Arnaud Bailly vs Norbert Gombos Set Handicap +/-1.5 | 0% |
| Prague 2: Gilles Arnaud Bailly vs Norbert Gombos Set 1 O/U 10.5 | 0% |
| Prague 2: Gilles Arnaud Bailly vs Norbert Gombos Set 2 O/U 10.5 | 0% |
Market context
Gilles Arnaud Bailly and Norbert Gombos are scheduled to meet in the Prague 2 tournament on 18 August 2026. The market currently prices Bailly's advancement at 28%, implying Gombos as the favoured outcome. No material developments have shifted positioning in the past 48 hours; the match remains on the calendar with both players confirmed for the event.
Bailly, a French player ranked outside the top 200, has competed sporadically on the ATP and Challenger circuits with limited breakthrough results. Gombos, a Slovak competitor, has maintained steadier Challenger-level presence and occasionally qualified for ATP events. Historical matchups between players at this ranking tier show that seeding, recent form, and surface preference typically drive outcomes more than head-to-head records, which are often sparse or absent. The 28% probability assigned to Bailly reflects the conventional expectation that Gombos enters as the more established competitor, though the gap is not insurmountable.
Traders should monitor the official Prague 2 draw confirmation and any late withdrawals or injury announcements in the week preceding 18 August. Surface conditions at the Prague venue—typically hard court—may favour one player's game style once training reports emerge. The settlement window closes on 25 August at 09:30 UTC, allowing a seven-day buffer for completion. Any cancellation, unfinished match beyond that date, or tie would trigger a 50-50 resolution.
Methodology
We track Prague 2: Gilles Arnaud Bailly vs Norbert Gombos across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
UK Frequently Asked Questions
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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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