Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Who Will Win) Pick polygram.ink (preferred broker) |
84% | 16% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
84% | 16% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| National Bank Open: Karen Khachanov vs Terence Atmane Set 1 O/U 8.5 | 84% |
| National Bank Open: Karen Khachanov vs Terence Atmane Match O/U 21.5 | 64% |
| National Bank Open: Karen Khachanov vs Terence Atmane Set 1 O/U 9.5 | 60% |
| National Bank Open: Karen Khachanov vs Terence Atmane | 56% |
| National Bank Open: Karen Khachanov vs Terence Atmane Match O/U 22.5 | 56% |
| National Bank Open: Karen Khachanov vs Terence Atmane Set 2 Winner | 54% |
| National Bank Open: Karen Khachanov vs Terence Atmane Set 1 Winner | 52% |
| Completed Match | 50% |
| National Bank Open: Karen Khachanov vs Terence Atmane Set 2 O/U 8.5 | 50% |
| National Bank Open: Karen Khachanov vs Terence Atmane Set 2 O/U 9.5 | 50% |
| National Bank Open: Karen Khachanov vs Terence Atmane Set 2 O/U 10.5 | 50% |
| National Bank Open: Karen Khachanov vs Terence Atmane Match O/U 23.5 | 49% |
| National Bank Open: Karen Khachanov vs Terence Atmane Total Sets: O/U 2.5 | 43% |
| National Bank Open: Karen Khachanov vs Terence Atmane Set 1 O/U 10.5 | 36% |
| National Bank Open: Karen Khachanov vs Terence Atmane Set Handicap +/-1.5 | 33% |
| National Bank Open: Karen Khachanov vs Terence Atmane Set Handicap +/-1.5 | 25% |
Market context
The National Bank Open meeting between Karen Khachanov and Terence Atmane is priced at a **56% implied probability** for Khachanov, so the market has him as a modest favourite rather than a clear one. That fits the basic ranking picture: Khachanov is ATP No. 39 and Atmane No. 46, and there is no prior head-to-head to anchor the price, so consensus is being driven more by experience and baseline level than by matchup history.[12][4]
For a handicapper, the key historical frame is that Khachanov’s overall profile is still stronger, but not by a huge margin: one source has him at roughly 51% match win rate over the last 12 months, compared with 45% for Atmane, while on hard courts the gap is narrower and even flips in some recent samples.[1] Both players have mixed 2026 records, and Atmane’s upside is not theoretical — he has taken multiple runs at Masters level this season, while Khachanov’s recent form has been uneven by his standards.[2][4] That leaves the “value” question split between the favourite’s ranking edge and the underdog’s ability to keep the match tight on a familiar hard-court surface.[10][12]
The main trading catalyst is simply whether the match is played as scheduled on 6 August, because the market sits inside the tournament’s early rounds and is sensitive to any delay, retirement or cancellation rule-set outcomes. Flashscore lists the fixture for 06/08/2026 and notes Khachanov’s recent Montreal history, including a semifinal run there in the past, while Atmane is looking for his best National Bank Open result after reaching the second round last year.[4] If the draw order changes or the match is pushed back, the path to a 50-50 settlement becomes more relevant than the pre-match handicap.
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 Who Will Win, 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
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Who Will Win. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- 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%.
Trade National Bank Open: Karen Khachanov vs Terence Atmane on Who Will Win
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