National Bank Open: Belinda Bencic vs Coco Gauff

Platform comparison

Market context

Polymarket is pricing this Belinda Bencic–Coco Gauff contract at **50% YES**, which is effectively a coin-flip on who advances on the **USDC**-denominated, **Polygon**-settled conditional token. With settlement only changing if a winner is confirmed, the current spread reflects a market still waiting for the tournament pathway and any match-day execution risk to clear.

The recent head-to-head makes that midline easier to read. Gauff has taken the last four meetings reported by multiple match logs, including Miami and Wimbledon in 2026, and she leads the overall series 4-2 or 5-2 depending on whether a pre-tour record is included; those same logs show several tight matches, with three-setters common in this pairing.[3][4][6][9][10] That matters for Polymarket because a close historical scoreline can support a near-even price even when one player has the stronger recent edge: traders are not just weighing form, but the chance of a swingy, high-variance match that can move sharply on one service break or medical issue.

The main catalysts are the usual tournament mechanics: the official order of play, any late withdrawal, and whether the match is actually completed within the market’s settlement window. The market only resolves to 50-50 if the match is not played, ends tied, or is delayed beyond seven days without a winner, so schedule slippage is as important as performance. The broader National Bank Open draw and any updates from the WTA or tournament feed are the practical signals to watch; if the match begins but is not finished, the advance rule will determine the token outcome rather than the final scoreline.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews National Bank Open: Belinda Bencic vs Coco Gauff 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 PolyGram, which mirrors the Polymarket order book at 0% fees.

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

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'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.