National Bank Open: Karen Khachanov vs Terence Atmane

Platform comparison

Market context

Karen Khachanov and Terence Atmane are due to meet in the National Bank Open second round on outdoor hard courts in Montreal, with the market effectively pricing who advances from that tie. The current crowd-implied 56% YES implies a slight edge to the named side, but the matchup is close enough that live scheduling changes or retirement risk can matter as much as pre-match form.

For historical framing, the main signal is that there is no head-to-head record, so traders are leaning on ranking, surface, and recent run-rate rather than any direct matchup data.[2][4] Khachanov is still the higher-ranked player, but only narrowly by the latest listings, while Atmane has already posted notable results against top-25 opposition on American hard courts, including a recent win over Frances Tiafoe in Washington.[1][3] Comparable market behaviour in this kind of ATP Masters 1000 second-round spot often sits near coin-flip territory when the ranking gap is modest and the underdog has recent hard-court wins, which is consistent with the current mid-50s pricing.

For programmatic traders, the key catalysts are whether the match starts on the published court and time, whether any order-of-play changes push it outside the settlement logic, and whether there is a completion or retirement outcome before the seven-day cutoff. Tennis Temple and other live scoreboards currently list the fixture for Court 5 at 19:30 local time, while recent preview coverage notes Atmane’s three-set win over Jack Draper and Khachanov’s longer rest between matches, both relevant for conditional orders that react to draw progression, delayed starts, or walkover risk.[1][9][10]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews National Bank Open: Karen Khachanov vs Terence Atmane across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Bot UK, which mirrors the Polymarket order book at 0% fees.

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

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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.

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Do I pay tax on prediction market profits in the UK?

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