Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) 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: Marie Bouzkova vs Iva Jovic | 100% |
| Completed Match | 100% |
| Cincinnati Open: Marie Bouzkova vs Iva Jovic Set 2 O/U 8.5 | 100% |
| Cincinnati Open: Marie Bouzkova vs Iva Jovic Set 2 Winner | 100% |
| Cincinnati Open: Marie Bouzkova vs Iva Jovic Match O/U 21.5 | 100% |
| Cincinnati Open: Marie Bouzkova vs Iva Jovic Set 1 O/U 8.5 | 100% |
| Cincinnati Open: Marie Bouzkova vs Iva Jovic Set 1 Winner | 100% |
| Cincinnati Open: Marie Bouzkova vs Iva Jovic Set 2 O/U 9.5 | 100% |
| Cincinnati Open: Marie Bouzkova vs Iva Jovic Set 1 O/U 9.5 | 100% |
| Cincinnati Open: Marie Bouzkova vs Iva Jovic Match O/U 22.5 | 100% |
| Cincinnati Open: Marie Bouzkova vs Iva Jovic Set 2 O/U 10.5 | 100% |
| Cincinnati Open: Marie Bouzkova vs Iva Jovic Match O/U 23.5 | 100% |
| Cincinnati Open: Marie Bouzkova vs Iva Jovic Set 1 O/U 10.5 | 100% |
| Cincinnati Open: Marie Bouzkova vs Iva Jovic Total Sets: O/U 2.5 | 0% |
| Cincinnati Open: Marie Bouzkova vs Iva Jovic Set Handicap +/-1.5 | 0% |
Market context
Marie Bouzkova faces Iva Jovic in the Cincinnati Open first round on 18 August 2026. The 78% implied probability favours Bouzkova, reflecting her established ranking advantage and recent form trajectory. No material changes to either player's status have emerged in the past 48 hours; the market has settled at this level based on pre-tournament seeding and draw positioning.
Bouzkova's record against lower-ranked opponents at hard-court Masters events provides the primary historical anchor. Over the past two seasons, she has converted first-round matches at Cincinnati-level tournaments at roughly 75–80% rates when seeded above her opponent, which aligns closely with current market pricing. Jovic, ranked outside the top 100, has shown improvement on hard courts but lacks the consistency record at this tier to shift expectations materially. The 78% figure sits within the normal range for a seeded player of Bouzkova's calibre facing an unseeded or lower-seeded opponent.
Traders should monitor the official Cincinnati draw confirmation and any late injury reports through 17 August. Weather forecasts for match day carry minor relevance given indoor-capable facilities, but scheduling delays could compress turnaround times if earlier matches run long. Bouzkova's performance in qualifying rounds or warm-up events immediately preceding Cincinnati would signal fitness or form shifts, though such data typically arrives too late to shift markets significantly. The 7-day completion window in the resolution criteria means withdrawal or illness after the scheduled date becomes the primary tail risk to track.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Prediction Today, which mirrors the Polymarket order book directly.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
UK Frequently Asked Questions
- 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.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- 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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