National Bank Open: Karen Khachanov vs Terence Atmane

Platform comparison

Market context

Karen Khachanov and Terence Atmane are due to meet in Montreal, with the market sitting at **56% Yes** for Khachanov after a sharp recent contrast in form: Atmane has already banked a win in the event and beat Jack Draper in three sets, while Khachanov arrived after an early exit in Los Cabos. The current pricing reflects a fairly even-looking second-round match, but with Khachanov still carrying the stronger profile on paper and Atmane coming in with more match rhythm.[1][2][3]

The historical frame is not decisive, because the pair have **no previous head-to-head** record, so traders are leaning more on surface and recent results than on direct matchup data.[1][4] Khachanov has a strong National Bank Open track record, having reached the final in 2024 and the semi-finals in 2018 and 2019, which helps explain why he is not priced as an underdog despite the recent wobble.[1][17] Atmane, by contrast, has shown he can trouble higher-ranked opponents on American hard courts, including a win over Frances Tiafoe in Washington, so the market is balancing pedigree against momentum.[1]

The key catalysts are straightforward: whether the match keeps its current slot, whether either player is confirmed fit, and whether the draw order changes on Court 5 before first serve. Tennis listings currently show the match as upcoming in Montréal on 5 August, with live scheduling tied to the second-round order, so any delay or court reassignment would matter for a market that settles on advancement rather than simply a completed draw slot.[3][14][8]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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.

FAQ

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.

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Today trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.