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 |
|---|---|
| Bunschoten: Tom Gentzsch vs Max Houkes | 100% |
| Completed Match | 100% |
| Bunschoten: Tom Gentzsch vs Max Houkes Set 2 Winner | 100% |
| Bunschoten: Tom Gentzsch vs Max Houkes Set 2 O/U 8.5 | 100% |
| Bunschoten: Tom Gentzsch vs Max Houkes Total Sets: O/U 2.5 | 100% |
| Bunschoten: Tom Gentzsch vs Max Houkes Set 1 O/U 8.5 | 100% |
| Bunschoten: Tom Gentzsch vs Max Houkes Match O/U 21.5 | 100% |
| Bunschoten: Tom Gentzsch vs Max Houkes Set 2 O/U 9.5 | 100% |
| Bunschoten: Tom Gentzsch vs Max Houkes Match O/U 22.5 | 100% |
| Bunschoten: Tom Gentzsch vs Max Houkes Set 2 O/U 10.5 | 100% |
| Bunschoten: Tom Gentzsch vs Max Houkes Match O/U 23.5 | 100% |
| Bunschoten: Tom Gentzsch vs Max Houkes Set 1 Winner | 0% |
| Bunschoten: Tom Gentzsch vs Max Houkes Set 1 O/U 9.5 | 0% |
| Bunschoten: Tom Gentzsch vs Max Houkes Set 1 O/U 10.5 | 0% |
| Bunschoten: Tom Gentzsch vs Max Houkes Set Handicap +/-1.5 | 0% |
| Bunschoten: Tom Gentzsch vs Max Houkes Set Handicap +/-1.5 | 0% |
Market context
Tom Gentzsch faces Max Houkes in the Bunschoten tennis tournament today, with the match originally slated for 4:00 AM ET on 17 July 2026. The prediction market currently implies a 100% probability that Gentzsch will advance, suggesting the crowd views Houkes as a non-factor despite model projections favouring Gentzsch only at 58% [2]. This divergence between crowd certainty and statistical modelling mirrors historical cases where on-chain liquidity concentrates heavily on one side before a match, often driven by whale flows rather than granular performance data. In similar crypto-prediction markets, such extreme probabilities frequently correct once live odds or injury updates emerge, as seen in previous tennis contracts where funding rates shifted sharply pre-match.
Traders should monitor the official tournament schedule for any delay beyond the seven-day settlement window, which would trigger a 50-50 resolution if no winner is determined. Key catalysts include real-time injury reports from the Bunschoten venue and any retirement announcements, as a partial match where one player advances due to opponent retirement still resolves to the advancing player. Recent coverage from 365scores confirms the match is scheduled for 09:00 local time today, but no live updates on player fitness have been published yet [1]. With USDC settlement tied to BTC/ETH macro movements, significant volatility in crypto markets could alter whale positioning, potentially impacting the implied probability before the settlement window closes on 24 July 2026.
Methodology
This page reads Bunschoten: Tom Gentzsch vs Max Houkes 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.
FAQ
- 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.
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- How does UMA secure the resolution?
- The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.
- Which crypto markets exist on Polymarket?
- Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.
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