National Bank Open: Zachary Svajda vs Arthur Fils

Platform comparison

Market context

Arthur Fils and Zachary Svajda are scheduled for a second-round meeting at the National Bank Open in Montréal, with the market resolving on who advances rather than the match score itself. The crowd-implied 0% YES suggests traders are not assigning meaningful weight to an upset-style outcome at the current price, but the real determinant is whether the match is actually completed or pushed beyond the settlement window, which would send the market to 50-50 instead. [9][11]

The form and ranking gap is the main historical frame: Tennis.com lists Fils at ATP No. 24 and Svajda at No. 87, while matchup sites show no prior head-to-head between them at tour level. Season records also point in the same direction, with Fils at 23-9 in 2026 versus Svajda at 27-18, although Svajda’s hard-court numbers are respectable and make this more than a pure ranking mismatch. [11][2][16]

For traders, the key catalysts are the match schedule and any confirmation that it starts on time, because a late rain delay, withdrawal, or abandonment would matter more than pre-match form for settlement purposes. Current listings already show live or imminent event pages for the fixture, so the market is leaning on official start-time confirmation and completion risk rather than campaign-style narrative shifts; in tennis terms, the decisive analogue is a candidate filing deadline, not a poll release. [3][8][9]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks National Bank Open: Zachary Svajda vs Arthur Fils across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Trump Prediction provide a 0%-fee route into the same order book.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

UK Frequently Asked Questions

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

Are UK election prediction markets available from the UK?

Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.