Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 |
|---|---|
| Completed Match | 100% |
| National Bank Open: Zachary Svajda vs Arthur Fils Set 2 Winner | 100% |
| National Bank Open: Zachary Svajda vs Arthur Fils Set 1 O/U 8.5 | 100% |
| National Bank Open: Zachary Svajda vs Arthur Fils Total Sets: O/U 2.5 | 100% |
| National Bank Open: Zachary Svajda vs Arthur Fils Match O/U 21.5 | 100% |
| National Bank Open: Zachary Svajda vs Arthur Fils Set 2 O/U 8.5 | 100% |
| National Bank Open: Zachary Svajda vs Arthur Fils Set 1 O/U 9.5 | 100% |
| National Bank Open: Zachary Svajda vs Arthur Fils Match O/U 22.5 | 100% |
| National Bank Open: Zachary Svajda vs Arthur Fils Match O/U 23.5 | 100% |
| National Bank Open: Zachary Svajda vs Arthur Fils | 0% |
| National Bank Open: Zachary Svajda vs Arthur Fils Set 1 Winner | 0% |
| National Bank Open: Zachary Svajda vs Arthur Fils Set Handicap +/-1.5 | 0% |
| National Bank Open: Zachary Svajda vs Arthur Fils Set 2 O/U 9.5 | 0% |
| National Bank Open: Zachary Svajda vs Arthur Fils Set 1 O/U 10.5 | 0% |
| National Bank Open: Zachary Svajda vs Arthur Fils Set 2 O/U 10.5 | 0% |
Market context
What has changed in the last 24-48 hours is simple: the match is now on the board, and the market is still pricing a decisive edge to Arthur Fils rather than treating this as a near coin flip. Public listings show Fils at ATP No. 24 against Zachary Svajda at No. 87, with no previous tour-level head-to-head between them, so there is no direct matchup history to anchor this one[9][1][12]. Recent market screens also show Fils as the clear pre-match favourite, with one prices snapshot putting him around $1.25 versus Svajda at $4.00, which is consistent with the crowd-implied 0% YES on a Svajda win[16].
The comparable-case frame is form and level rather than rivalry. Fils has posted a stronger 2026 season record and a much higher hard-court win rate across the available stat sets, while Svajda’s hard-court record is materially weaker and his overall profile remains that of a lower-ranked challenger[2][3][4]. That matters because the National Bank Open is played on hard courts, and both players’ season splits point in the same direction: Fils has looked more efficient on serve and more resilient in return points, which is usually the more reliable baseline in a one-off ATP match[3][13].
For traders, the near-term catalysts are confirmation of the order of play, any late withdrawal or injury note, and whether the match starts on time rather than being pushed into a weather or scheduling delay. Flashscore and other live match pages still show the fixture as pending, with match statistics only due once play begins, so the main binary risk is still pre-match status rather than in-play volatility[5][8]. Because the settlement window allows a 50-50 outcome if the match is cancelled, tied, or delayed beyond seven days without a winner, any disruption to the tournament schedule is more relevant here than in a standard outrights market[market description].
Methodology
We track National Bank Open: Zachary Svajda vs Arthur Fils across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
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.
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 Prediction Today. 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%.
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