Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets UK) Pick polygram.ink (preferred broker) |
93% | 7% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
93% | 7% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| US Open WTA: Jessica Pegula vs Sofia Kenin | 93% |
| US Open WTA: Jessica Pegula vs Sofia Kenin Set 2 Winner | 87% |
| US Open WTA: Jessica Pegula vs Sofia Kenin Set 1 Winner | 85% |
| US Open WTA: Jessica Pegula vs Sofia Kenin Set Handicap +/-1.5 | 77% |
| US Open WTA: Jessica Pegula vs Sofia Kenin Set 1 O/U 8.5 | 54% |
| Completed Match | 50% |
| US Open WTA: Jessica Pegula vs Sofia Kenin Set 2 O/U 8.5 | 50% |
| US Open WTA: Jessica Pegula vs Sofia Kenin Set 2 O/U 9.5 | 50% |
| US Open WTA: Jessica Pegula vs Sofia Kenin Set 2 O/U 10.5 | 50% |
| US Open WTA: Jessica Pegula vs Sofia Kenin Game Spread +/-6.5 | 48% |
| US Open WTA: Jessica Pegula vs Sofia Kenin Match O/U 21.5 | 46% |
| US Open WTA: Jessica Pegula vs Sofia Kenin Set 1 O/U 9.5 | 44% |
| US Open WTA: Jessica Pegula vs Sofia Kenin Set 1 O/U 10.5 | 32% |
| US Open WTA: Jessica Pegula vs Sofia Kenin Match O/U 23.5 | 32% |
| US Open WTA: Jessica Pegula vs Sofia Kenin Match O/U 22.5 | 25% |
| US Open WTA: Jessica Pegula vs Sofia Kenin Total Sets: O/U 2.5 | 23% |
Market context
Based on real-money crowd forecasting, us open wta: jessica pegula vs sofia kenin stands at 93% likelihood according to current market consensus. This market refers to the tennis match between Jessica Pegula and Sofia Kenin in the US Open WTA, originally scheduled for September 2, 2026 at 11:00AM ET. This market will resolv…
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 Best Prediction Markets UK, which mirrors the Polymarket order book directly.
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 Best Prediction Markets UK. 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.
- 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.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- What are the best prediction markets for UK traders in 2026?
- For UKGC-regulated markets: Betfair Exchange (sports, politics) and Smarkets (sports, politics, lower commission than Betfair). For broader global event prediction: Polymarket (deepest liquidity, 0% fee, USDC settlement). For US-regulated option: Kalshi (USD, limited UK payment options). Most serious UK traders use a combination of Betfair for regulated sports and Polymarket for broader markets.
Trade US Open WTA: Jessica Pegula vs Sofia Kenin on Best Prediction Markets UK
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