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 |
|---|---|
| US Open WTA: Nikola Bartunkova vs Tatjana Maria | 100% |
| Completed Match | 100% |
| US Open WTA: Nikola Bartunkova vs Tatjana Maria Total Sets: O/U 2.5 | 100% |
| US Open WTA: Nikola Bartunkova vs Tatjana Maria Set 2 Winner | 100% |
| US Open WTA: Nikola Bartunkova vs Tatjana Maria Set 1 O/U 8.5 | 100% |
| US Open WTA: Nikola Bartunkova vs Tatjana Maria Match O/U 21.5 | 100% |
| US Open WTA: Nikola Bartunkova vs Tatjana Maria Set 1 O/U 9.5 | 100% |
| US Open WTA: Nikola Bartunkova vs Tatjana Maria Game Spread +/-3.5 | 100% |
| US Open WTA: Nikola Bartunkova vs Tatjana Maria Match O/U 22.5 | 100% |
| US Open WTA: Nikola Bartunkova vs Tatjana Maria Set 1 O/U 10.5 | 100% |
| US Open WTA: Nikola Bartunkova vs Tatjana Maria Match O/U 23.5 | 100% |
| US Open WTA: Nikola Bartunkova vs Tatjana Maria Set 1 Winner | 0% |
| US Open WTA: Nikola Bartunkova vs Tatjana Maria Set 2 O/U 8.5 | 0% |
| US Open WTA: Nikola Bartunkova vs Tatjana Maria Set Handicap +/-1.5 | 0% |
| US Open WTA: Nikola Bartunkova vs Tatjana Maria Set 2 O/U 9.5 | 0% |
| US Open WTA: Nikola Bartunkova vs Tatjana Maria Set 2 O/U 10.5 | 0% |
Market context
Traders on decentralised prediction markets give 100% probability to us open wta: nikola bartunkova vs tatjana maria. This market refers to the tennis match between Nikola Bartunkova and Tatjana Maria in the US Open WTA, originally scheduled for September 3, 2026 at 2:30PM ET. This market will resolve to 'Nikola Bar…
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
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.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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%.
Trade US Open WTA: Nikola Bartunkova vs Tatjana Maria on Prediction Today
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