Cincinnati Open: Anna Blinkova vs Ekaterina Alexandrova

Platform comparison

Market context

Anna Blinkova and Ekaterina Alexandrova were scheduled to meet in the Cincinnati Open women’s second round on 16 August, with the tournament running on hard courts in the run-up to the 23 August finals. That makes the relevant settlement question straightforward: whether the match was actually played, and if so, who advanced.

The market’s 0% YES price implies the contract is already treating Blinkova as highly unlikely to advance, so the practical read is closer to a suspended or stale event than a live coin-flip. In comparable tennis markets, the key distinction is between a completed result and a walkover, retirement, or no-show, because those outcomes can still trigger the 50-50 fallback if no winner is formally determined within the settlement window.

For a programmatic workflow, the main checks are the official order of play, live score feeds, and any tournament bulletins on schedule changes. Cincinnati’s published schedule placed women’s second-round play on 16 August and third-round play from 17–18 August, so any delay past that weekend, or a match abandoned before completion, would be the critical dependency to monitor. Tournament scheduling notes and coverage from the event site and tennis outlets confirmed the main draw was active across 16–17 August, which is the period most likely to resolve this market cleanly.

Sources: 1 · 2 · 3 · 4 · 5

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 Polymarket Review UK, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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'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%.