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 |
|---|---|
| Completed Match | 100% |
| Liberec: Franco Roncadelli vs Norbert Gombos Set 1 O/U 8.5 | 100% |
| Liberec: Franco Roncadelli vs Norbert Gombos Set 1 O/U 9.5 | 100% |
| Liberec: Franco Roncadelli vs Norbert Gombos Set 2 O/U 8.5 | 100% |
| Liberec: Franco Roncadelli vs Norbert Gombos Match O/U 21.5 | 100% |
| Liberec: Franco Roncadelli vs Norbert Gombos Set 1 O/U 10.5 | 100% |
| Liberec: Franco Roncadelli vs Norbert Gombos Set Handicap +/-1.5 | 100% |
| Liberec: Franco Roncadelli vs Norbert Gombos Set 2 O/U 9.5 | 100% |
| Liberec: Franco Roncadelli vs Norbert Gombos Match O/U 22.5 | 100% |
| Liberec: Franco Roncadelli vs Norbert Gombos Set 2 O/U 10.5 | 100% |
| Liberec: Franco Roncadelli vs Norbert Gombos Match O/U 23.5 | 100% |
| Liberec: Franco Roncadelli vs Norbert Gombos | 0% |
| Liberec: Franco Roncadelli vs Norbert Gombos Total Sets: O/U 2.5 | 0% |
| Liberec: Franco Roncadelli vs Norbert Gombos Set 2 Winner | 0% |
| Liberec: Franco Roncadelli vs Norbert Gombos Set 1 Winner | 0% |
| Liberec: Franco Roncadelli vs Norbert Gombos Set Handicap +/-1.5 | 0% |
Market context
Franco Roncadelli’s match with Norbert Gombos in Liberec is priced by the crowd at **0% YES**, even though the underlying tennis listings show a live, scheduled round-two meeting on red clay with Roncadelli around ATP 225 and Gombos around ATP 423.[1][4] That gap matters because this market settles on the on-chain event outcome, not on pre-match opinion: if the match is played and a winner is recorded, USDC-style prediction contracts typically resolve directly to that side; if it is cancelled, left undecided beyond the delay window, or otherwise ends without a winner, the contract can fall back to a 50-50 settlement.
Comparables suggest the market is reading the fixture as close but not coin-flip simple. Independent tennis pages show little or no head-to-head history and broadly split pre-match expectations, with some modelled pricing near even money and others leaning slightly to Roncadelli, while tournament pages still list the match as upcoming rather than completed.[3][5][11] In that setting, a zero-cent YES quote usually reflects either thin liquidity, stale positioning, or a strong belief that the listed side is being mislabelled rather than a clean forecast of on-court strength.
The main catalyst for traders is whether the fixture starts on schedule at Svijany Court and reaches a completed result before the 7-day timeout, since tennis markets can reprice sharply on late order-of-play changes, retirements, or walkovers.[1][7] For a crypto-native angle, the relevant live inputs are contract liquidity and any abrupt shift in broader risk appetite: BTC and ETH funding can affect speculative demand at the margin, but in this contract the dominant driver is still the match status itself and whether the result is posted cleanly enough for automated settlement.[16]
Methodology
This page reads Liberec: Franco Roncadelli vs Norbert Gombos 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
- 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.
- 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.
- 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.
- Are crypto prediction markets taxable in the US?
- In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.
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