National Bank Open: Caty McNally vs Alexandra Eala

Platform comparison

Market context

Caty McNally and Alexandra Eala are meeting in the National Bank Open, and the market is effectively a live read on who gets through rather than a straight head-to-head win rate. The crowd price of 19% on McNally sits well below Tennis.com’s pre-match projection, which listed Eala as the 68% projected winner, while McNally’s own ranking and season profile are stronger on paper than that split suggests.[3][8]

Programmatically, the cleanest way to model this market is as a binary advancement event with a fallback 50-50 if the fixture is not completed under the rules, so any bot or conditional-order workflow should track the official draw state, match start time, and retirement/cancellation status rather than just the scoreline. There is no tour-level head-to-head to anchor a prior, and that makes current form and surface-specific output more useful than historical matchup filters: one comparison site shows McNally with a 2026 win rate around 65.6% over the last 12 months, versus Eala at about 59.4%, while another lists Eala’s 2026 hard-court record as stronger and notes she has already reached the last 16 of WTA 1000 events four times, all on hard courts.[1][5][8]

For catalysts, the key inputs are the official order of play, any weather or schedule changes, and whether the match starts on time at all, because a no-contest or a delay beyond seven days forces the market to 50-50 by rule. The National Bank Open match page had the contest listed for Centre Court with no completed statistics at the time of the pre-match feed, so traders watching via scripts or alerts should prioritise the tournament’s live status page and live-score providers for any rescheduling or retirement notices.[12][9]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track National Bank Open: Caty McNally vs Alexandra Eala across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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.

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 Bot 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.

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%.