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 |
|---|---|
| Roehampton: Radu Albot vs Constantin Bittoun Kouzmine | 100% |
| Completed Match | 100% |
| Roehampton: Radu Albot vs Constantin Bittoun Kouzmine Set 2 Winner | 100% |
| Roehampton: Radu Albot vs Constantin Bittoun Kouzmine Set 1 Winner | 100% |
| Roehampton: Radu Albot vs Constantin Bittoun Kouzmine Set Handicap +/-1.5 | 100% |
| Roehampton: Radu Albot vs Constantin Bittoun Kouzmine Set 2 O/U 8.5 | 0% |
| Roehampton: Radu Albot vs Constantin Bittoun Kouzmine Total Sets: O/U 2.5 | 0% |
| Roehampton: Radu Albot vs Constantin Bittoun Kouzmine Set 1 O/U 8.5 | 0% |
| Roehampton: Radu Albot vs Constantin Bittoun Kouzmine Match O/U 21.5 | 0% |
| Roehampton: Radu Albot vs Constantin Bittoun Kouzmine Set 2 O/U 9.5 | 0% |
| Roehampton: Radu Albot vs Constantin Bittoun Kouzmine Set 1 O/U 9.5 | 0% |
| Roehampton: Radu Albot vs Constantin Bittoun Kouzmine Match O/U 22.5 | 0% |
| Roehampton: Radu Albot vs Constantin Bittoun Kouzmine Set Handicap +/-1.5 | 0% |
| Roehampton: Radu Albot vs Constantin Bittoun Kouzmine Set 2 O/U 10.5 | 0% |
| Roehampton: Radu Albot vs Constantin Bittoun Kouzmine Set 1 O/U 10.5 | 0% |
| Roehampton: Radu Albot vs Constantin Bittoun Kouzmine Match O/U 23.5 | 0% |
Market context
Radu Albot, the Moldovan professional ranked outside the top 100, faces Constantin Bittoun Kouzmine in an early-round encounter at Roehampton scheduled for 18 August 2026. The market currently reflects 100% implied probability for Albot's advancement, a stark consensus that warrants scrutiny given the settlement window extends to 25 August—a seven-day buffer that permits rescheduling without triggering the 50-50 tie-break clause.
Albot's career record against lower-ranked opponents and his recent ATP Challenger performances provide the foundation for this pricing. However, comparable grass-court upsets at Roehampton and other pre-Wimbledon tournaments show that seeding disparities often compress when both players compete on unfamiliar surfaces. Historical volatility in qualifying-round matches—where weather delays and surface conditions create execution variance—suggests the current 100% reading discounts legitimate contingency risk. Bittoun Kouzmine's recent form on grass or clay surfaces, if available through ATP databases, would clarify whether this is a mismatch or a closer contest masked by aggregate ranking.
Traders should monitor official ATP and LTA announcements regarding court assignments, weather forecasts for the Roehampton grounds, and any injury updates released within 48 hours of the match. Grass-court tournaments frequently experience rescheduling; the extended settlement window hints that organisers anticipate potential delays. On-chain USDC settlement will execute only after confirmed match resolution, so any cancellation or postponement beyond 25 August triggers the automatic 50-50 split regardless of market sentiment.
Methodology
This page reads Roehampton: Radu Albot vs Constantin Bittoun Kouzmine 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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