National Bank Open: Sara Bejlek vs Iga Swiatek

Platform comparison

Market context

Iga Swiatek and Sara Bejlek have already met once this year, with Swiatek winning their French Open match 6-2, 6-3 on clay in late May.[3][8][14] That straight-sets result is the main historical anchor for reading this market: Swiatek was the far more efficient player on serve and return in that meeting, while Bejlek’s route to an upset would normally require a sharp swing in error count or break-point conversion.[2][3] With the crowd price at 0% YES, the market is effectively treating a Bejlek advance as an extreme outlier rather than a routine upset.

For traders, the key near-term issue is whether the match actually goes ahead on the original schedule, because this market also has a 50-50 fallback if it is not played, ends level, or is delayed beyond seven days without a winner.[Market description] The National Bank Open draw, order of play, and any late withdrawals are the immediate catalysts, alongside on-site injury or fitness reports. The WTA’s official score page and live match pages are the cleanest places to confirm whether Swiatek and Bejlek are both still active in the event and whether the matchup is locked in.[3][6][7]

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 Prediction Today, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

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'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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Today trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.