National Bank Open: Daria Kasatkina vs Elena Rybakina

Platform comparison

Market context

Daria Kasatkina and Elena Rybakina are scheduled to meet at the National Bank Open, and in a prediction market a **YES** share pays out if the named outcome happens, while a **NO** share pays out if it does not. With the market currently pricing a 10% YES probability, traders are effectively assigning a low chance that Kasatkina advances through this match under the settlement rules.

The historical frame is mixed but slightly favours Rybakina. Their head-to-head stands at 3-2 in her favour, with Rybakina also winning their last two meetings, including straight-sets victories in Abu Dhabi in 2024 and a tight three-setter in Montreal in 2023.[1][10] That matters because prediction-market prices often reflect both recent form and matchup history: Rybakina has been stronger across the last 12 months, while Kasatkina has been more uneven, even if she has taken sets in several previous meetings.[1][14]

What traders should watch is whether the match is played on schedule and whether either player withdraws, because the market resolves to 50-50 if the match is not played, ends level, or is delayed beyond seven days without a winner.[Market description] The draw and daily order of play around the National Bank Open can shift quickly, so official tournament scheduling and late fitness or withdrawal updates matter more than the headline 10% figure. Recent match notes from the WTA show these two have produced hard-court contests with close service and return numbers, so any change in venue conditions, timing, or player availability could materially alter the chance of an actual result.[10][16]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews National Bank Open: Daria Kasatkina vs Elena Rybakina 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 Prediction Market UK, 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.

UK Frequently Asked Questions

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.

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%.