Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Review UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Sion: Lorenzo Giustino vs Henry Bernet | 100% |
| Completed Match | 100% |
| Sion: Lorenzo Giustino vs Henry Bernet Set 1 Winner | 100% |
| Sion: Lorenzo Giustino vs Henry Bernet Set 1 O/U 8.5 | 100% |
| Sion: Lorenzo Giustino vs Henry Bernet Match O/U 21.5 | 100% |
| Sion: Lorenzo Giustino vs Henry Bernet Total Sets: O/U 2.5 | 100% |
| Sion: Lorenzo Giustino vs Henry Bernet Set 2 O/U 8.5 | 100% |
| Sion: Lorenzo Giustino vs Henry Bernet Set 1 O/U 9.5 | 100% |
| Sion: Lorenzo Giustino vs Henry Bernet Match O/U 22.5 | 100% |
| Sion: Lorenzo Giustino vs Henry Bernet Match O/U 23.5 | 100% |
| Sion: Lorenzo Giustino vs Henry Bernet Set 2 Winner | 0% |
| Sion: Lorenzo Giustino vs Henry Bernet Set Handicap +/-1.5 | 0% |
| Sion: Lorenzo Giustino vs Henry Bernet Set 2 O/U 9.5 | 0% |
| Sion: Lorenzo Giustino vs Henry Bernet Set Handicap +/-1.5 | 0% |
| Sion: Lorenzo Giustino vs Henry Bernet Set 1 O/U 10.5 | 0% |
| Sion: Lorenzo Giustino vs Henry Bernet Set 2 O/U 10.5 | 0% |
Market context
A lower-tier ATP Challenger match scheduled for Sion on 19 August 2026 between Italian qualifier Lorenzo Giustino and Swiss player Henry Bernet presents a straightforward advance-or-exit binary. The current 100% implied probability for Giustino suggests either substantial pre-match information favouring the Italian, or minimal liquidity driving the odds to an extreme. Given both players compete regularly on the Challenger circuit, this pricing warrants scrutiny before committing capital.
Giustino, ranked outside the top 200 for much of his career, has shown inconsistent form across European clay and hard courts. Bernet, competing primarily on home soil and lower-tier circuits, lacks significant ATP ranking history. Historical Challenger matchups between players of comparable ranking typically settle around 50–55% for the higher-ranked competitor, making the current 100% reading an outlier. Review recent ATP Challenger results from July–August 2026 to establish baseline win rates for players in this ranking band; the ATP website's match archives provide head-to-head records and surface-specific performance data essential for calibrating expectations.
Traders implementing conditional orders should monitor three variables through settlement on 26 August: official confirmation of the match proceeding as scheduled, withdrawal announcements from either player (common 48–72 hours pre-match on the Challenger circuit), and any weather delays affecting the Sion venue. Programmatic monitoring of ATP Challenger draw updates and player social media accounts will flag cancellations or postponements triggering the 50–50 resolution clause. The seven-day grace period embedded in the settlement terms creates a tail-risk window; set alerts for any match postponement beyond 26 August to capture potential market repricing.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Review UK, which mirrors the Polymarket order book directly.
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's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- 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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