Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi UK) 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 Jerome Kym | 100% |
| Completed Match | 100% |
| Hagen: Tom Gentzsch vs Jerome Kym Set 2 Winner | 100% |
| Hagen: Tom Gentzsch vs Jerome Kym Set 1 Winner | 100% |
| Hagen: Tom Gentzsch vs Jerome Kym Set 2 O/U 8.5 | 100% |
| Hagen: Tom Gentzsch vs Jerome Kym Set 1 O/U 8.5 | 100% |
| Hagen: Tom Gentzsch vs Jerome Kym Match O/U 21.5 | 100% |
| Hagen: Tom Gentzsch vs Jerome Kym Set 2 O/U 9.5 | 100% |
| Hagen: Tom Gentzsch vs Jerome Kym Set 1 O/U 9.5 | 100% |
| Hagen: Tom Gentzsch vs Jerome Kym Match O/U 22.5 | 100% |
| Hagen: Tom Gentzsch vs Jerome Kym Set 2 O/U 10.5 | 100% |
| Hagen: Tom Gentzsch vs Jerome Kym Set Handicap +/-1.5 | 100% |
| Hagen: Tom Gentzsch vs Jerome Kym Total Sets: O/U 2.5 | 0% |
| Hagen: Tom Gentzsch vs Jerome Kym Set 1 O/U 10.5 | 0% |
| Hagen: Tom Gentzsch vs Jerome Kym Match O/U 23.5 | 0% |
| Hagen: Tom Gentzsch vs Jerome Kym Set Handicap +/-1.5 | 0% |
Market context
Polymarket is pricing this contract at **100% YES**, so the market is treating Tom Gentzsch’s advance over Jerome Kym in Hagen as fully priced on Polygon, settled through the USDC-backed conditional-token structure rather than by opinion alone. The relevant question is simply whether Gentzsch emerges as the winner or advancer; if the match is not completed in a way that produces a winner, the contract’s own rules point to the fallback outcome rather than a binary result.
The historical read is straightforward: these two have already met on clay, with Gentzsch beating Kym 2-0 at Roland Garros qualifying in May 2026, and the head-to-head is currently split across their meetings, which makes the pairing less one-sided than the market implies.[1][2][3][10] Hagen listings and live-tracking pages also show Gentzsch marginally ahead in ATP ranking at around this event, with both players repeatedly appearing in Challenger-level finals on clay, so the matchup sits in the category where small form or surface edges can matter more than brand-name reputation.[6][9][13][15]
For a Polymarket user, the main catalysts are practical rather than abstract: official start-time changes, court assignment, weather or scheduling delays, and any retirement or walkover scenario that would determine whether the market resolves as a normal win or falls back to the tie-style outcome under the contract rules. Public score and event feeds suggest the final is/was scheduled for the Hagen Challenger on clay on 9 August 2026, with various listings placing it around 12:30 UTC/8:30 ET, so traders are watching for confirmation that the match actually starts and reaches a completed result before the settlement window closes.[6][9][12][13][16]
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 Kalshi 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
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Kalshi UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- 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%.
Trade Hagen: Tom Gentzsch vs Jerome Kym on Kalshi UK
Live order book, 0% fees, USDC settlement in seconds.
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