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 |
|---|---|
| Brownsburg: Joel Schwaerzler vs Andres Andrade Set 1 O/U 8.5 | 100% |
| Completed Match | 50% |
| Brownsburg: Joel Schwaerzler vs Andres Andrade Set 2 Winner | 50% |
| Brownsburg: Joel Schwaerzler vs Andres Andrade Total Sets: O/U 2.5 | 50% |
| Brownsburg: Joel Schwaerzler vs Andres Andrade Set 2 O/U 8.5 | 50% |
| Brownsburg: Joel Schwaerzler vs Andres Andrade Match O/U 21.5 | 50% |
| Brownsburg: Joel Schwaerzler vs Andres Andrade Set 2 O/U 9.5 | 50% |
| Brownsburg: Joel Schwaerzler vs Andres Andrade Match O/U 22.5 | 50% |
| Brownsburg: Joel Schwaerzler vs Andres Andrade Set Handicap +/-1.5 | 50% |
| Brownsburg: Joel Schwaerzler vs Andres Andrade Set 2 O/U 10.5 | 50% |
| Brownsburg: Joel Schwaerzler vs Andres Andrade Match O/U 23.5 | 50% |
| Brownsburg: Joel Schwaerzler vs Andres Andrade Set Handicap +/-1.5 | 25% |
| Brownsburg: Joel Schwaerzler vs Andres Andrade | 20% |
| Brownsburg: Joel Schwaerzler vs Andres Andrade Set 1 Winner | 0% |
| Brownsburg: Joel Schwaerzler vs Andres Andrade Set 1 O/U 9.5 | 0% |
| Brownsburg: Joel Schwaerzler vs Andres Andrade Set 1 O/U 10.5 | 0% |
Market context
Joel Schwaerzler faces Andres Andrade in a Brownsburg tennis match originally scheduled for 10 August 2026. The market currently prices Schwaerzler's advancement at 19%, implying substantial backing for Andrade despite limited public information on either player's recent form or head-to-head record. Settlement occurs via USDC on the prediction platform, with resolution tied to match completion by 17 August 2026—a seven-day buffer that accounts for weather delays or scheduling shifts common in lower-tier professional tennis circuits.
Historical precedent suggests markets on regional tennis fixtures often underweight unseeded or lower-ranked challengers when data scarcity dominates pricing. ATP Challenger and ITF-level matches frequently see crowd probability drift toward favourites based on ranking alone, yet upsets occur at rates that would reward contrarian positions. The 19% probability for Schwaerzler reflects either genuine form disadvantage or simple information asymmetry; traders should cross-reference recent ITF/Challenger results and ranking trajectories before treating the current price as settled consensus.
Catalysts include official draw confirmations, injury announcements, or venue changes that might affect court conditions or player preparation. Brownsburg's surface type and altitude remain material variables. Funding rates on the USDC settlement pair and whale accumulation patterns on btc-prediction.bet itself may signal informed positioning ahead of the match date. Any announcement of withdrawal or rescheduling beyond the seven-day window triggers the 50-50 tie resolution, creating tail-risk exposure for directional traders.
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.
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.
- 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.
- 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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