Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Market UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Philadelphia: Anastasia Zakharova vs Anna Blinkova | 100% |
| Completed Match | 100% |
| Philadelphia: Anastasia Zakharova vs Anna Blinkova Set 1 Winner | 100% |
| Philadelphia: Anastasia Zakharova vs Anna Blinkova Set 2 Winner | 100% |
| Philadelphia: Anastasia Zakharova vs Anna Blinkova Set 1 O/U 8.5 | 100% |
| Philadelphia: Anastasia Zakharova vs Anna Blinkova Set Handicap +/-1.5 | 100% |
| Philadelphia: Anastasia Zakharova vs Anna Blinkova Set 1 O/U 9.5 | 100% |
| Philadelphia: Anastasia Zakharova vs Anna Blinkova Set 1 O/U 10.5 | 100% |
| Philadelphia: Anastasia Zakharova vs Anna Blinkova Match O/U 21.5 | 0% |
| Philadelphia: Anastasia Zakharova vs Anna Blinkova Total Sets: O/U 2.5 | 0% |
| Philadelphia: Anastasia Zakharova vs Anna Blinkova Set 2 O/U 8.5 | 0% |
| Philadelphia: Anastasia Zakharova vs Anna Blinkova Set 2 O/U 9.5 | 0% |
| Philadelphia: Anastasia Zakharova vs Anna Blinkova Match O/U 22.5 | 0% |
| Philadelphia: Anastasia Zakharova vs Anna Blinkova Set Handicap +/-1.5 | 0% |
| Philadelphia: Anastasia Zakharova vs Anna Blinkova Set 2 O/U 10.5 | 0% |
| Philadelphia: Anastasia Zakharova vs Anna Blinkova Match O/U 23.5 | 0% |
Market context
Anastasia Zakharova and Anna Blinkova are entered in the Philadelphia WTA 125 main draw on hard courts, with the match listed for the opening round and the event running 23-29 August 2026[2][5][9]. In prediction-market terms, a YES share pays out if Zakharova advances and a NO share pays out if Blinkova advances; if the match is not completed in line with the settlement rules, the market can still fall back to a 50-50 outcome. The crowd-implied 100% YES price says the market is treating a Zakharova advance as fully priced in, so there is no visible room for a surprise unless the fixture changes.
That kind of extreme price is usually read as a statement about expectation, not certainty. Zakharova was seeded eighth in the draw, while Blinkova sat outside the seed line, and recent live listings showed the market matching up as a straight singles first-round contest on the Philadelphia hard courts[2][5][9]. A previous meeting between the two also went Blinkova’s way in Cluj in 2022, which is the main historical reference point for comparing their head-to-head profile[1].
The main catalysts are administrative rather than tactical: whether the match starts as scheduled, whether the draw order shifts, and whether any suspension or withdrawal alters the path to a completed result. Live scoreboards and the official draw are the most useful checks because this market only resolves on a clear advance, or defaults to 50-50 if no winner is determined by 6 September 2026, 11:59 PM ET[2][5][6][9]. The Philadelphia event page and match listings are the cleanest indicators of whether the fixture remains live, postponed, or finished[6][9].
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 Market UK, 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
- 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 Market UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- 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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