National Bank Open: Magdalena Frech vs Leolia Jeanjean

Platform comparison

Market context

Polymarket is pricing Magdalena Frech to beat Leolia Jeanjean at **56% YES** on a contract settled in **USDC** on **Polygon**, with the conditional token paying out only if Frech advances; if the match is not completed within the market’s rules, the position can resolve to 50-50 instead. That price sits below several sportsbook and model benchmarks, which puts a modest favourite tag on Frech rather than a near-certain outcome.[1][2][11]

The market’s current level is broadly consistent with outside tennis pricing that makes Frech a clear but not overwhelming favourite. BetUS listed Frech around **-170** and Jeanjean around **+140**, while TennisTemple showed average odds near **1.60** for Frech and **2.30** for Jeanjean, translating to an implied win chance in the mid-to-high 50s after bookmaker margin.[1][2] Dimers’ model was slightly higher at **59%** for Frech, so Polymarket’s 56% implies a small discount to the consensus rather than a sharp divergence.[11]

For traders, the main catalysts are straightforward: the match must actually start and reach a completed result before the settlement window closes, and any scheduling change, rain delay, walkover or retirement matters because the contract’s fallback logic can push it to 50-50 if no winner is determined in time. TennisTemple and Tennis.com both list the fixture as a first-round National Bank Open match in Toronto, with hard-court conditions and an intended August 2 slot, so late draw updates, court-order changes or withdrawal news are the key dependencies to watch.[2][10]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews National Bank Open: Magdalena Frech vs Leolia Jeanjean 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 Kalshi 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 Kalshi UK. 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 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.