Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) Pick polygram.ink (preferred broker) |
75% | 25% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
75% | 25% | 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, Qualification: Alina Korneeva vs Alina Charaeva | 75% |
| Cincinnati Open, Qualification: Alina Korneeva vs Alina Charaeva Set 1 Winner | 72% |
| Cincinnati Open, Qualification: Alina Korneeva vs Alina Charaeva Set 1 O/U 8.5 | 64% |
| Cincinnati Open, Qualification: Alina Korneeva vs Alina Charaeva Set Handicap +/-1.5 | 55% |
| Completed Match | 50% |
| Cincinnati Open, Qualification: Alina Korneeva vs Alina Charaeva Set 2 O/U 8.5 | 50% |
| Cincinnati Open, Qualification: Alina Korneeva vs Alina Charaeva Set 2 O/U 9.5 | 50% |
| Cincinnati Open, Qualification: Alina Korneeva vs Alina Charaeva Set 2 O/U 10.5 | 50% |
| Cincinnati Open, Qualification: Alina Korneeva vs Alina Charaeva Match O/U 23.5 | 45% |
| Cincinnati Open, Qualification: Alina Korneeva vs Alina Charaeva Match O/U 21.5 | 44% |
| Cincinnati Open, Qualification: Alina Korneeva vs Alina Charaeva Set 1 O/U 9.5 | 42% |
| Cincinnati Open, Qualification: Alina Korneeva vs Alina Charaeva Match O/U 22.5 | 41% |
| Cincinnati Open, Qualification: Alina Korneeva vs Alina Charaeva Set 2 Winner | 38% |
| Cincinnati Open, Qualification: Alina Korneeva vs Alina Charaeva Total Sets: O/U 2.5 | 33% |
| Cincinnati Open, Qualification: Alina Korneeva vs Alina Charaeva Set 1 O/U 10.5 | 22% |
| Cincinnati Open, Qualification: Alina Korneeva vs Alina Charaeva Set Handicap +/-1.5 | 14% |
Market context
The Cincinnati Open qualifying draw will feature Russian players Alina Korneeva and Alina Charaeva competing for a spot in the main draw, with the match scheduled for 12 August 2026. Korneeva, ranked around 150th on the WTA tour, has shown steady progression through qualifying rounds at major tournaments this season. Charaeva, similarly positioned in the rankings, brings comparable experience at this level of competition. The 74% implied probability favouring Korneeva reflects modest but measurable confidence in her advancement.
Head-to-head records between players at qualifying stage offer limited predictive value given the small sample sizes typical at this tier. However, Korneeva's recent form through qualifying rounds at other WTA events suggests slightly stronger consistency in converting opportunities. Both players have competed in similar tournament environments throughout 2026, with neither demonstrating dominant performance patterns that would justify substantially higher odds. The probability differential appears calibrated to minor advantages rather than clear superiority.
Traders should monitor official Cincinnati Open draw confirmations and any late withdrawals or schedule adjustments in the days preceding the match. Weather conditions at the Cincinnati venue occasionally affect qualifying matches, particularly if play extends beyond the initial scheduled window. Injury updates or last-minute player retirements from the qualifying draw could alter the match's occurrence entirely. The settlement window extends to 19 August, providing a week-long buffer for completion, though qualifying matches typically conclude within their scheduled dates unless significant disruptions occur.
Methodology
We track Cincinnati Open, Qualification: Alina Korneeva vs Alina Charaeva across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
UK Frequently Asked Questions
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Today. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- 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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