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 |
|---|---|
| Hagen: Tom Gentzsch vs Zsombor Piros | 100% |
| Completed Match | 100% |
| Hagen: Tom Gentzsch vs Zsombor Piros Set 1 Winner | 100% |
| Hagen: Tom Gentzsch vs Zsombor Piros Set 2 O/U 8.5 | 100% |
| Hagen: Tom Gentzsch vs Zsombor Piros Set 1 O/U 8.5 | 100% |
| Hagen: Tom Gentzsch vs Zsombor Piros Set Handicap +/-1.5 | 100% |
| Hagen: Tom Gentzsch vs Zsombor Piros Set 2 Winner | 100% |
| Hagen: Tom Gentzsch vs Zsombor Piros Set 2 O/U 9.5 | 100% |
| Hagen: Tom Gentzsch vs Zsombor Piros Set 1 O/U 9.5 | 100% |
| Hagen: Tom Gentzsch vs Zsombor Piros Total Sets: O/U 2.5 | 0% |
| Hagen: Tom Gentzsch vs Zsombor Piros Match O/U 21.5 | 0% |
| Hagen: Tom Gentzsch vs Zsombor Piros Match O/U 22.5 | 0% |
| Hagen: Tom Gentzsch vs Zsombor Piros Set Handicap +/-1.5 | 0% |
| Hagen: Tom Gentzsch vs Zsombor Piros Set 2 O/U 10.5 | 0% |
| Hagen: Tom Gentzsch vs Zsombor Piros Set 1 O/U 10.5 | 0% |
| Hagen: Tom Gentzsch vs Zsombor Piros Match O/U 23.5 | 0% |
Market context
Tom Gentzsch and Zsombor Piros are still the live names on the board, with the market pinned at **100% YES** for Gentzsch and the exchange pricing heavily tilted the same way in pre-match betting. That makes the current read less about a marginal edge and more about whether the contest is actually completed in a way that allows a straight winner settlement, because the market rules still leave room for a 50-50 outcome if the match is not played or drifts beyond the settlement conditions.
The form guide behind this price has leaned towards Piros in the recent preview markets, but the latest number now shown by sportsbook and tipster pages is much tighter in Gentzsch’s favour than earlier 2026 meeting odds suggested. In their April clay-court clash in Ostrava, Piros was the stronger pre-match favourite, and several preview models again backed him to win, including in three sets, which is useful context for interpreting how quickly pre-match probabilities can move when conditions, draw position, or player availability shift.[2][3][11][16]
For traders, the main catalysts are straightforward: confirmation that the Hagen match is actually played, any late schedule change on court order or start time, and any update to retirement, walkover or cancellation status before the settlement window closes. The market description makes clear that a completed result is required for a clean winner payout, while any no-show, tie, or delay beyond seven days from the scheduled date pushes resolution to 50-50, so the key risk is procedural rather than ranking-based.[1][6][10]
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
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'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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