Cincinnati Open: Alexander Zverev vs Terence Atmane

Platform comparison

Market context

Alexander Zverev’s third-round meeting with Terence Atmane at the Cincinnati Open was still listed as scheduled late on 17 August, with multiple live score and schedule pages carrying a start time around midnight local time and no completed result yet. That leaves the market anchored to whether the match is actually played and, if so, whether Zverev advances before the settlement window closes on 24 August.

The 92% Yes price sits in line with the form and seeding gap. Zverev came through his second-round match against Cameron Norrie in three sets, while Atmane advanced after beating Tomás Martín Etcheverry; the head-to-head is 1-0 to Zverev, and preview markets had already made him a heavy favourite, generally pricing him in the mid-80s or better.

For traders, the main catalysts are operational rather than long-term tennis factors: confirmation of court order, any weather delay, and whether the match begins on schedule or slips into the next day. If play starts, the key binary is completion versus a retirement or abandonment, because that determines whether the market resolves to one player or falls back to 50-50 under the stated rules.

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 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

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.

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.

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%.