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 |
|---|---|
| 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’s match with Zsombor Piros in Hagen is the event behind the contract, and the market is currently pricing a near-certain Gentzsch advance. That is consistent with the contract structure: it resolves to the named winner only if the match is completed with an advance, while a cancellation, no-contest, or delay beyond seven days pushes settlement to 50-50 rather than either player outright.
The 100% YES price sits well above the wider tennis pricing seen elsewhere, where bookmakers and tip sites have generally made Zsombor Piros a modest favourite rather than a lock. Recent market snapshots show Piros around 1.47-1.50 and Gentzsch around 2.45-2.71 at several books, with predictive pages also leaning towards Piros in the 65-75% range, which underlines how extreme the on-chain price is relative to off-chain consensus[2][3][7][11]. A prior April meeting between the pair was also priced as competitive rather than one-sided, reinforcing that head-to-head data has not pointed to a cleanly dominant edge for Gentzsch[4][14].
For traders, the main catalysts are simple event execution risks rather than match odds: official order of play, any delay to start time, retirement rules, or a walkover that changes whether the contract resolves to a player or the 50-50 fallback. Flashscore, Sofascore and similar live-score feeds are the quickest places to confirm whether the match has begun and whether a result is official[5][13]. In broader market terms, a fully priced outcome leaves little room for BTC or ETH beta to matter directly, but any sharp move in risk assets can still affect USDC market depth and the ease of entering or exiting a tightly held yes-side position.
Methodology
This page reads Hagen: Tom Gentzsch vs Zsombor Piros 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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