National Bank Open: Zachary Svajda vs Arthur Fils

Platform comparison

Market context

Zachary Svajda’s meeting with Arthur Fils in Montreal is a straightforward hard-court matchup with Fils priced as the clear favourite across most match trackers. Sofascore lists Fils at ATP No. 22 and Svajda at No. 76, while third-party prediction models shown in the search results put Fils around the high-70s to low-80s in win probability, versus roughly 20-25% for Svajda.[1][4][6] That makes the current 0% crowd-implied YES on a Polymarket-style contract easy to compare with a more conventional book view: Betfair or Smarkets would usually surface this as decimal odds first, then an implied probability after commission, whereas Kalshi/Polymarket display the market directly as a binary price. The practical difference is that the same opinion can look slightly cheaper or dearer once exchange fees, spreads and KYC limits are applied.

The main historical frame is that this is apparently their first ATP-level meeting, so there is no head-to-head record to lean on.[2][4][5] In that situation, traders usually anchor to ranking, recent hard-court form and the draw context rather than prior match-ups. That favours Fils on paper, but the absence of a direct comparison also leaves more room for pricing gaps across venues: a retail-friendly venue may move more slowly on low-liquidity matches, while an exchange can reprice sharply if a late injury or withdrawal hits. TennisMajors lists the contest as a second-round match, which underlines that the result depends on the draw holding and on Fils being the same player who was scheduled to take court as of the latest listings.[5]

For catalysts, the key watchpoints are the official order of play, any walkover or retirement news, and whether the match starts on the announced schedule at Court 5 in Montreal.[1][7][11] Sofascore and related live-score pages were already listing a start time on 5 August 2026, but these events can shift with rain, court timing or a prior match running long.[1][3][11] For this market, the settlement clause matters: if the match is not played, ends level, or is delayed beyond seven days without a winner, the contract resolves 50-50 rather than to either player. On Kalshi or Smarkets, that kind of event risk would typically be read through the contract terms and fee-adjusted price; on Polymarket, the same event risk is usually reflected more directly in the YES/NO spread.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We read National Bank Open: Zachary Svajda vs Arthur Fils from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.