National Bank Open: Zachary Svajda vs Arthur Fils

Platform comparison

Market context

Arthur Fils is due to play Zachary Svajda in the National Bank Open, with the market only resolving to a named winner if the match is completed or a player advances; if it is not played, or stalls beyond the seven-day window, the contract falls back to 50-50. The crowd is pricing **0% YES**, which is consistent with a view that the listed outcome is already effectively excluded or that the market is anchored to a different interpretation of the settlement rules rather than to the on-court matchup itself.

On the tennis side, the form and ranking gap favours Fils. The two have no prior head-to-head record, but Fils is ranked 24 and has a 2026 record of 23-9, while Svajda is ranked 87 and is 27-18 this season; hard-court splits also lean to Fils, who has been stronger across tour-level comparisons and serves more effectively, with higher first-serve win and return-point numbers in season stats.[1][3][10][13] That kind of profile usually pulls implied win probabilities well above zero in a straightforward best-of-three ATP match, so a flat 0% reading is more plausibly a market-structure or settlement artefact than a pure tennis view.

Traders should watch the official draw sheet, any late scheduling changes, and live status updates from the tournament feed, because delay, walkover, retirement, or cancellation can determine whether the market resolves to a player name or to the 50-50 fallback. The match was listed for Court 5 in Montreal and is already in the window where slips, court-order reshuffles, or weather interruptions can matter more than pre-match odds.[7][10] On the crypto side, the contract settles in USDC, so the practical execution question is whether the event resolves cleanly before expiry, not whether BTC or ETH are moving intraday; on-chain settlement risk is more about event finality than market direction.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

UK Frequently Asked Questions

What are crypto prediction markets?

Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.

Why USDC and not ETH or USDT?

USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.

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%.