National Bank Open: Caty McNally vs Alexandra Eala

Platform comparison

Market context

Polymarket is pricing this **Caty McNally vs Alexandra Eala** contract at **0% YES**, which means the market is effectively saying McNally is not expected to advance on the current information. The event is settled on whether McNally advances against Eala, with USDC escrowed on Polygon via conditional tokens, so traders are really weighing match completion and the official winner rather than the headline alone.

The recent head-to-head and season data do not point to a strong McNally edge. Eala beat McNally in Toronto on 7 August 2026, taking the match 6-3, 5-7, 6-4 after 2h39, and the reported match stats were close across total points and service numbers.[3][14] TennisRatio lists Eala at 38-26 over the past 52 weeks, while Flashscore notes she has won 21 of 25 matches against outside top-50 players this season and has reached the last 16 of WTA 1000 events on hard courts four times.[1][9] By contrast, McNally’s recent profile is more volatile, with Flashscore noting she had only recently begun beating top-20 players and had not previously gone beyond the round of 16 at a WTA 1000 before Madrid.[9]

For traders, the key catalysts are straightforward: an official order-of-play update, any withdrawal or walkover notice, and whether the match is completed normally or falls into the market’s special settlement rules. If the fixture is postponed beyond seven days without a winner, or is not played at all, the market resolves 50-50 rather than to either player, so timing matters as much as form. Because this is a live tournament contract, a late schedule change can matter more than pre-match statistics.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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.

UK Frequently Asked Questions

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 Polymarket Scam?. 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.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.