National Bank Open: Magdalena Frech vs Leolia Jeanjean

Platform comparison

Market context

Magdalena Frech’s first-round meeting with Leolia Jeanjean at the National Bank Open is priced as a modest Frech favourite across conventional sportsbooks, which makes the prediction market’s 56% YES close to the wider market rather than an outlier. BetUS lists Frech at -170 and Jeanjean at +140, implying roughly a mid-60s win chance before margin, while TennisTemple’s aggregated prices sit around 1.60 for Frech and 2.30 for Jeanjean, or about 62.5% versus 43.5% in decimal form before bookmaker overround is removed.[1][2]

That spread is consistent with the way pre-match opinion has framed the contest: Frech is the higher-ranked player and the more established WTA-level entrant, while Jeanjean arrives as the qualifier with lower market standing.[2][7] Several tipsters have leaned towards Frech, including TheStatsZone, which explicitly picked her to win 2-0, although OLBG’s sample was split 50-50 and therefore less decisive than the sportsbook consensus.[8][9] In cross-platform terms, the current crowd price looks slightly conservative versus the sharpest sportsbook numbers, but not dramatically so.[1][2]

For traders, the main catalysts are straightforward: confirmation that the match is actually played on the scheduled Toronto order of play, any late withdrawal or walkover, and whether weather or court scheduling pushes the start date beyond the seven-day settlement rule. The market only needs a winner for resolution, but if the match is not played at all, ends level, or is delayed too long without a result, it resolves 50-50. Live scheduling pages and tournament draw updates remain the key watchpoints because the event sits on a tight first-round timetable.[6][11][14]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track National Bank Open: Magdalena Frech vs Leolia Jeanjean 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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 Best Prediction Markets. 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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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.