Cincinnati Open: Alexander Zverev vs Terence Atmane

Platform comparison

Market context

Polymarket has this contract at 91% YES, which effectively prices Alexander Zverev as a heavy favourite to advance over Terence Atmane. On the current market structure, that means traders are backing the view that the top seed should still close the job on US hard courts and that the on-chain position on Polygon, settled in USDC through conditional tokens, is far from a coin-flip.

That level fits the usual pattern for a seeded ATP Masters match when the favourite has already held form through the opening rounds. Zverev came through his second-round match in straight sets, while Atmane also progressed and is the lower-ranked, less established player in the pairing. In comparable third-round markets, prices in the 85%-95% band tend to hold unless the favourite shows physical issues, a surprise withdrawal appears, or the draw is disrupted by scheduling changes.

The main traders’ watchpoints are simple: the official order of play, any late court reassignment, and any medical or retirement news before first serve. The match was listed for 17 August on the Cincinnati schedule, with later reporting placing it in the evening session, which matters because a delay or walkover can still push the contract towards the market’s 50-50 fallback if the contest is not completed within the stated window. If the match starts but is not finished, the settlement mechanics depend on whether a winner is formally recorded before the deadline.

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 Alternative 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

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%.