National Bank Open: Ignacio Buse vs Cameron Norrie

Platform comparison

Market context

Polymarket is pricing **Ignacio Buse to advance over Cameron Norrie at 5%**, which is far below the prices implied elsewhere and suggests the contract is trading as a strong Norrie lean. On Polymarket, the position is settled in **USDC** on **Polygon** through conditional tokens, so the key question is not just who is better on paper, but whether the match is actually completed in a way that produces a clear winner before the settlement deadline.

Comparable pricing across tennis books and model feeds points the same way. Dimers has Norrie around **62%** to win, Flashscore’s listed bookmaker odds also make him the favourite, and Tennis.com shows a projected winner split of roughly **64% Norrie / 36% Buse**.[1][2][12] That makes a **5% yes** price look like a steep discount to the broader market, which usually reflects either thin liquidity, a market that has already moved sharply, or traders assigning extra weight to an upset scenario or event risk rather than pure match strength.[1][9][12]

The main catalysts for a trader are the final match status, any late schedule change, and whether the contest starts on the published ATP Montréal slate. If the match is postponed beyond seven days without a winner, or is cancelled or left unresolved under the market rules, the outcome shifts to **50-50** rather than a player win, so live draw attention should sit on official tournament updates and the scoreboard feed rather than pre-match previews alone.[9][12] Recent market pages and odds boards still list the match as upcoming with Norrie favoured, but those numbers can move quickly if the start time slips or a walkover is announced.[2][9][11]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews National Bank Open: Ignacio Buse vs Cameron Norrie 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 PolyGram, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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 PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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%.