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, Qualification: Renata Zarazua vs Yue Yuan Set 1 O/U 8.5 | 100% |
| Cincinnati Open, Qualification: Renata Zarazua vs Yue Yuan Set 2 O/U 8.5 | 100% |
| Cincinnati Open, Qualification: Renata Zarazua vs Yue Yuan Set 2 O/U 9.5 | 100% |
| Cincinnati Open, Qualification: Renata Zarazua vs Yue Yuan Set 1 O/U 9.5 | 100% |
| Cincinnati Open, Qualification: Renata Zarazua vs Yue Yuan | 0% |
| Cincinnati Open, Qualification: Renata Zarazua vs Yue Yuan Set 1 Winner | 0% |
| Cincinnati Open, Qualification: Renata Zarazua vs Yue Yuan Total Sets: O/U 2.5 | 0% |
| Cincinnati Open, Qualification: Renata Zarazua vs Yue Yuan Match O/U 21.5 | 0% |
| Cincinnati Open, Qualification: Renata Zarazua vs Yue Yuan Set Handicap +/-1.5 | 0% |
| Cincinnati Open, Qualification: Renata Zarazua vs Yue Yuan Set 2 Winner | 0% |
| Cincinnati Open, Qualification: Renata Zarazua vs Yue Yuan Match O/U 22.5 | 0% |
| Cincinnati Open, Qualification: Renata Zarazua vs Yue Yuan Set 2 O/U 10.5 | 0% |
| Cincinnati Open, Qualification: Renata Zarazua vs Yue Yuan Match O/U 23.5 | 0% |
| Cincinnati Open, Qualification: Renata Zarazua vs Yue Yuan Set 1 O/U 10.5 | 0% |
Market context
Renata Zarazua of Mexico and Yue Yuan of China are scheduled to contest a qualifying-round match at the Cincinnati Open on 11 August 2026. The winner advances to the main draw of the ATP 1000 event; the loser is eliminated. Settlement occurs on 18 August, allowing a seven-day window for completion or rescheduling before the market resolves to 50-50.
Historical precedent suggests qualifying matches at Cincinnati rarely cancel outright, though weather delays are common in August. Zarazua, ranked around 150 on the WTA, has qualified for Cincinnati's main draw twice in the past four years but holds a mixed record in high-altitude qualifying rounds. Yuan, similarly ranked in the 140s, has limited recent ATP-level exposure and minimal head-to-head history against players of Zarazua's calibre. The 0% implied probability reflects either a technical market initialisation or genuine uncertainty about whether the match will be contested at all—a signal to monitor entry conditions rather than dismiss outright.
Traders should track Cincinnati's official draw confirmation and any weather alerts for the Cincinnati region in early August. Recent ATP and WTA scheduling announcements (typically published 10–14 days before events) will confirm court assignments and session times. Zarazua's fitness status and any late withdrawals from the qualifying draw are material catalysts. The USDC settlement mechanism on btc-prediction.bet means traders holding positions should verify the exact timestamp of the 14:30 UTC deadline on 18 August, as delayed matches beyond that window trigger the tie resolution regardless of eventual outcome.
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
- 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.
- 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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