National Bank Open, Qualification: Sofia Kenin vs Lucrezia Stefanini

Platform comparison

Market context

Polymarket has this match priced at **0% YES**, so the contract is trading as if Sofia Kenin is extremely unlikely to advance against Lucrezia Stefanini. On Polymarket, the payout depends on the tennis result being recorded on-chain through **USDC** settlement on **Polygon**, with the event mapped into conditional tokens rather than a discretionary cash bet.

The market’s current read looks more extreme than the usual gap between the players’ profiles. Kenin is listed around **WTA No. 116** and Stefanini around **No. 144**, but recent results point in different directions: Tennisstats shows no head-to-head record and gives Stefanini a stronger 2026 match-winning rate, while Kenin’s 2026 win rate is much lower in the same sample[1][2][3][8][10]. That sort of split matters in qualification markets, where form, surface, and late withdrawals can outweigh broader career reputation. If the event is not completed cleanly, the contract can still resolve to **50-50** under the stated rules, so traders are not only pricing a winner but also the risk that the match is not finished as scheduled.

The main catalysts are simple: whether the qualifying draw holds, whether either player is listed as active in official match feeds, and whether the match is actually started and completed within the seven-day window. Flashscore and Tennis.com both list the fixture for 1 August 2026 in Toronto qualifying, which supports that the market is tied to an immediate schedule rather than a distant contingency[5][10]. For Polymarket users, the practical watchlist is official tournament status, live scoring, and any postponement or retirement updates, because those determine whether the token settles to Kenin, Stefanini, or the contract’s fallback 50-50 state[5][10][19].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

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 PolyGram. 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.

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.