National Bank Open: Taylor Townsend vs Belinda Bencic

Platform comparison

Market context

The contract is pricing **Belinda Bencic** at roughly **75%**, with **Taylor Townsend** around **25%**, so the Polymarket market is leaning firmly towards Bencic advancing rather than treating this as close to a coin-flip.[2][5] On Polymarket, the contract settles via the match result on Polygon using USDC-backed conditional tokens, so the relevant question is not just who is favoured pre-match, but whether a completed result is actually posted before the settlement window closes.[2]

That pricing is consistent with outside match markets, which generally have Bencic as the clearer favourite. BetUS listed Bencic at **-325** versus Townsend at **+235**, while Tennis Temple’s aggregated bookmaker pricing showed Bencic around **1.33** on average and Townsend around **3.34**.[4][3] Similar probability gaps have also been reflected on other prediction venues, where Bencic has sat in the low- to mid-70s and Townsend in the high-20s, suggesting the market is mostly tracking standard pre-match moneyline expectations rather than an outsized upset chance.[6][11]

The main catalysts for traders are straightforward: the official start time, any late scheduling change at the National Bank Open, and whether the match is completed rather than interrupted. Polymarket’s own contract terms mean that if play is cancelled, tied, or delayed beyond seven days without a winner, the market resolves 50-50, while a started-but-unfinished match also resolves 50-50 unless one player is officially advanced.[2] For that reason, traders tend to watch draw updates, live score feeds, and tournament scheduling rather than only pre-match odds, because a walkover, suspension, or abandoned match can matter as much as on-court performance.[2][9][18]

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 Kalshi UK, which mirrors the Polymarket order book directly.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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 Kalshi 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%.