National Bank Open: Karen Khachanov vs Terence Atmane

Platform comparison

Market context

Polymarket is pricing **Karen Khachanov** at **56%** to advance, with the contract settling in USDC on Polygon through conditional tokens rather than a direct bet on the scoreline. The market is tied to whether Khachanov or Terence Atmane advances from their National Bank Open meeting, and it only flips to 50-50 if the match is not played, ends level, or is delayed beyond seven days without a winner.

That pricing sits in the middle of a genuinely live matchup. Khachanov has the deeper hard-court pedigree and comes in with the sort of tournament record that keeps him respectable in Masters-level draws, but Atmane has already shown form in Montreal with a three-set win over Jack Draper and has also been competitive against higher-ranked opposition on American hard courts, including Frances Tiafoe in Washington.[1][2] The head-to-head is 0-0, so there is no direct historical edge between them to anchor the market.[4]

For traders, the main catalysts are simple: whether Khachanov is confirmed fit and on schedule, whether the match is moved on the programme, and whether Atmane’s earlier-round workload carries over into this one.[1][3] The contract resolves only on a clean advance, so any retirement, suspension, or prolonged delay matters as much as the on-court result. Current listings place the match as an upcoming Round 2 meeting in Montreal, with market venues already posting the fixture and early pricing reflecting a modest Khachanov lean rather than a strong consensus.[3][17]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track National Bank Open: Karen Khachanov vs Terence Atmane across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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%.