National Bank Open: Liudmila Samsonova vs Barbora Krejcikova

Platform comparison

Market context

Polymarket is pricing Liudmila Samsonova versus Barbora Krejcikova as a near-certain Krejcikova advance, with the contract currently implying **100% YES** for the Krejcikova side. On the underlying match, the market should still be read as a standard two-outcome tennis conditional-token event settled in USDC on Polygon: if one player advances, that side resolves to YES; if the match is cancelled, tied, or pushed beyond the allowed delay, it can fall back to 50-50 under the market rules.

The current price is consistent with a wider market view that Krejcikova is the stronger favourite, even though some match previews note Samsonova’s head-to-head edge. Tennis.com’s live tournament page lists Krejcikova as the projected winner at 68%, while other pricing feeds also lean her way, generally in the 60-70% range. That makes the Polymarket price look aggressive rather than neutral, which is what you often see when traders expect a straightforward result and the order book becomes one-sided.

For traders, the main catalysts are simple but important: official WTA scheduling, any change to court assignment or start time, and pre-match fitness updates. The market description matters here because settlement is driven by whether the match is actually played and completed within the specified window; if rain, withdrawal, or a scheduling backlog prevents that, the contract can revert away from a normal winner call. With the match listed for Toronto on August 5 local time across multiple tennis feeds, the key risk is not the headline favourite but operational disruption before a winner is formally recorded.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews National Bank Open: Liudmila Samsonova vs Barbora Krejcikova 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 Kalshi UK, which mirrors the Polymarket order book at 0% fees.

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

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.

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%.