Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Cincinnati Open: Peyton Stearns vs Clara Tauson Set 2 Winner | 100% |
| Cincinnati Open: Peyton Stearns vs Clara Tauson Set 1 O/U 8.5 | 100% |
| Cincinnati Open: Peyton Stearns vs Clara Tauson Set 1 O/U 9.5 | 100% |
| Cincinnati Open: Peyton Stearns vs Clara Tauson Set 1 O/U 10.5 | 100% |
| Cincinnati Open: Peyton Stearns vs Clara Tauson | 85% |
| Completed Match | 50% |
| Cincinnati Open: Peyton Stearns vs Clara Tauson Total Sets: O/U 2.5 | 50% |
| Cincinnati Open: Peyton Stearns vs Clara Tauson Match O/U 21.5 | 50% |
| Cincinnati Open: Peyton Stearns vs Clara Tauson Set Handicap +/-1.5 | 50% |
| Cincinnati Open: Peyton Stearns vs Clara Tauson Match O/U 22.5 | 50% |
| Cincinnati Open: Peyton Stearns vs Clara Tauson Match O/U 23.5 | 50% |
| Cincinnati Open: Peyton Stearns vs Clara Tauson Set 1 Winner | 0% |
| Cincinnati Open: Peyton Stearns vs Clara Tauson Set 2 O/U 8.5 | 0% |
| Cincinnati Open: Peyton Stearns vs Clara Tauson Set 2 O/U 9.5 | 0% |
| Cincinnati Open: Peyton Stearns vs Clara Tauson Set 2 O/U 10.5 | 0% |
Market context
Peyton Stearns and Clara Tauson are scheduled to meet in the Cincinnati Open's early rounds on 15 August 2026. The 85% implied probability favouring Stearns reflects her higher ranking and recent form on hard courts, where she has posted consistent results through the North American summer swing. Tauson, the Danish left-hander, arrives with a more erratic record on this surface, though she remains capable of producing sharp tennis in shorter formats.
Stearns has built her reputation on baseline consistency and serve reliability—attributes that typically translate well to Cincinnati's conditions. Her recent tournament appearances suggest she has maintained fitness through the lead-up weeks, a factor that matters considerably in back-to-back hard-court events. Tauson's trajectory has been marked by occasional breakthrough performances punctuated by early exits; her conversion rate in straight-set matches against seeded opponents sits below 40% over the past two seasons, which contextualises why the market has settled so decisively in Stearns' favour.
Traders should monitor late withdrawals or injury updates in the week preceding the match, as both players often carry minor complaints through summer schedules. The Cincinnati tournament typically maintains its schedule despite weather delays, though any postponement beyond seven days would trigger the 50-50 resolution clause. Stearns' recent practice patterns and any coaching adjustments will be visible through official WTA communications and courtside reporting from Cincinnati-based journalists covering the event.
Methodology
Sports-specific comparison page for Cincinnati Open: Peyton Stearns vs Clara Tauson. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
UK Frequently Asked Questions
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- 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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