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: Simona Waltert vs Jessica Pegula Set 1 O/U 8.5 | 100% |
| Cincinnati Open: Simona Waltert vs Jessica Pegula Set Handicap +/-1.5 | 100% |
| Cincinnati Open: Simona Waltert vs Jessica Pegula | 0% |
| Cincinnati Open: Simona Waltert vs Jessica Pegula Set 1 Winner | 0% |
| Cincinnati Open: Simona Waltert vs Jessica Pegula Match O/U 21.5 | 0% |
| Cincinnati Open: Simona Waltert vs Jessica Pegula Set 2 Winner | 0% |
| Cincinnati Open: Simona Waltert vs Jessica Pegula Total Sets: O/U 2.5 | 0% |
| Cincinnati Open: Simona Waltert vs Jessica Pegula Set 2 O/U 8.5 | 0% |
| Cincinnati Open: Simona Waltert vs Jessica Pegula Match O/U 22.5 | 0% |
| Cincinnati Open: Simona Waltert vs Jessica Pegula Set 1 O/U 9.5 | 0% |
| Cincinnati Open: Simona Waltert vs Jessica Pegula Set 2 O/U 9.5 | 0% |
| Cincinnati Open: Simona Waltert vs Jessica Pegula Match O/U 23.5 | 0% |
| Cincinnati Open: Simona Waltert vs Jessica Pegula Set 1 O/U 10.5 | 0% |
| Cincinnati Open: Simona Waltert vs Jessica Pegula Set 2 O/U 10.5 | 0% |
Market context
The Cincinnati Open, held annually at the Lindner Family Tennis Center in Ohio, will host a first-round match between Swiss player Simona Waltert and American Jessica Pegula on 15 August 2026. Pegula, ranked consistently in the top 10 globally and a regular fixture in Grand Slam quarterfinals, represents a significant seeding advantage over Waltert, whose WTA ranking typically sits outside the top 100. The 0% implied probability reflects the substantial disparity in playing strength and match history between the two competitors.
Waltert has never defeated Pegula in their limited head-to-head record, and Pegula's performance at hard-court events—particularly North American summer tournaments—has historically been strong. Comparable first-round matchups involving top-10 seeds against unranked or lower-ranked challengers at Masters 1000 events settle overwhelmingly in favour of the seeded player, with upset victories occurring in fewer than 5% of such encounters. The current market pricing aligns with this historical baseline.
Traders should monitor Pegula's injury status and recent match fitness in the weeks preceding the tournament, as any withdrawal or late-round losses beforehand could shift expectations. The WTA's official draw announcement and any schedule adjustments will be published approximately one week before the event. Settlement occurs on 22 August 2026 at 14:00 UTC, allowing for a seven-day window to accommodate potential delays. USDC settlement mechanics on btc-prediction.bet will execute upon match completion or the resolution criteria being met.
Methodology
This page reads Cincinnati Open: Simona Waltert vs Jessica Pegula on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
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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