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% |
| Cincinnati Open: Antonia Ruzic vs Magdalena Frech Set 2 O/U 8.5 | 100% |
| Cincinnati Open: Antonia Ruzic vs Magdalena Frech Set Handicap +/-1.5 | 100% |
| Cincinnati Open: Antonia Ruzic vs Magdalena Frech Set 2 O/U 9.5 | 100% |
| Cincinnati Open: Antonia Ruzic vs Magdalena Frech Set 2 O/U 10.5 | 100% |
| Cincinnati Open: Antonia Ruzic vs Magdalena Frech | 0% |
| Cincinnati Open: Antonia Ruzic vs Magdalena Frech Set 1 Winner | 0% |
| Cincinnati Open: Antonia Ruzic vs Magdalena Frech Set 1 O/U 8.5 | 0% |
| Cincinnati Open: Antonia Ruzic vs Magdalena Frech Total Sets: O/U 2.5 | 0% |
| Cincinnati Open: Antonia Ruzic vs Magdalena Frech Match O/U 21.5 | 0% |
| Cincinnati Open: Antonia Ruzic vs Magdalena Frech Set 2 Winner | 0% |
| Cincinnati Open: Antonia Ruzic vs Magdalena Frech Match O/U 22.5 | 0% |
| Cincinnati Open: Antonia Ruzic vs Magdalena Frech Set 1 O/U 9.5 | 0% |
| Cincinnati Open: Antonia Ruzic vs Magdalena Frech Match O/U 23.5 | 0% |
| Cincinnati Open: Antonia Ruzic vs Magdalena Frech Set 1 O/U 10.5 | 0% |
Market context
The Cincinnati Open, held annually at the Lindner Family Tennis Center in Ohio, features Antonia Ruzic of Serbia against Poland's Magdalena Frech in a first-round matchup scheduled for 13 August 2026. Both players compete on the WTA circuit; Ruzic has ranked as high as world number 19, whilst Frech has reached approximately number 30. The match carries standard hard-court conditions typical of the Masters 1000 event, with settlement contingent on a decisive result by 20 August 2026.
The 0% implied probability reflects either minimal trading activity or a technical artefact common in early-stage markets with sparse liquidity. Historical precedent suggests Cincinnati Open matches rarely fail to complete—cancellations occur in fewer than 2% of scheduled fixtures at this tier. Head-to-head records between players of this ranking differential typically favour the higher-ranked competitor, though Frech has demonstrated competitive form on hard courts in recent seasons. Comparable WTA first-round markets at major events generally settle within 48 hours of the scheduled date.
Traders should monitor WTA injury bulletins and official Cincinnati Open draw confirmations released in early August. Recent ATP and WTA scheduling disruptions have been minimal; Citi Open and Canadian Open fixtures in the preceding fortnight will indicate whether weather or logistical delays affect the broader North American hard-court swing. USDC settlement mechanics on btc-prediction.bet execute upon match completion confirmation via official ATP/WTA databases, with no dependency on external price feeds or macro asset volatility.
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.
- 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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