National Bank Open: Lois Boisson vs Antonia Ruzic

Platform comparison

Market context

Loïs Boisson and Antonia Ružić are due to meet on outdoor hard courts in Toronto, and the market is effectively pricing the chance that Boisson advances in a first-round WTA 1000 match. Ružić is the higher-ranked player at world No. 55, while Boisson is listed around No. 292, so a 73% crowd-implied “YES” means traders are already leaning towards a Boisson upset being less likely than the bracket draw alone might suggest[1][9][13].

The cleanest way to read this market is through comparable pre-match setups: there is no head-to-head history, both players are the same age, and the surface is hard rather than Boisson’s more obvious clay-leaning comfort zone. Public tennis feeds also point to Ružić’s steadier 2026 body of results and Boisson’s sparse main-draw win record this season, which helps explain why programmatic models would usually start by anchoring on ranking, recent hard-court form, and tournament tier before adjusting for any late scratches or walkover risk[2][8][10][12].

For traders using bots or conditional orders, the live catalysts are simple: confirm whether the match actually starts, monitor official schedule changes from Toronto, and watch for any retirement or suspension states that could trigger the market’s special settlement rules. If the match is postponed or washed out, the outcome can shift to a tie rather than a player win, so automated logic should treat “not played”, “unfinished”, and “winner by retirement” differently from a completed result; live score pages and draw updates are the practical sources to poll near the scheduled start window[1][3][7].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews National Bank Open: Lois Boisson vs Antonia Ruzic 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 Polymarket Bot UK, 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.

FAQ

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 Polymarket Bot UK. 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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.