National Bank Open: Jessica Pegula vs Kamilla Rakhimova

Platform comparison

Market context

Polymarket prices the Jessica Pegula side at **99% YES** for a USDC-settled contract on Polygon, which implies the market is treating a Pegula advance as the near-base case rather than a live 50-50 tennis match. That pricing is materially richer than external pre-match estimates, with several books and model-based previews placing Pegula roughly in the mid-to-high 80s to around 90% to win, against low-teens probability for Kamilla Rakhimova.[1][2][3][4]

For context, top WTA seeds in early-round hard-court matches often trade above 80% when they are facing a much lower-ranked opponent, but 99% is typically reserved for outcomes where the market believes the favourite has very little path to an upset or a non-standard settlement. Pegula is the higher-ranked player and the available odds also point to a clear favourite, with betting markets around -870 to -925 on Pegula, which is consistent with an overwhelming edge but still leaves more upset risk than Polymarket’s current price suggests.[2][4][5][8]

The main catalysts are simple: whether the match starts on schedule, whether it is completed without interruption, and whether any official tournament reshuffle, withdrawal, or weather delay changes the settlement path. Because the contract resolves only if Pegula advances against Rakhimova, a retirement or cancellation can matter as much as the scoreline under the market rules, and any delay beyond seven days from the scheduled date would push it to 50-50 instead of a player win.[19] For traders, the relevant live signals are the published order of play, court assignment, and official match status updates from the National Bank Open, plus any late injury or withdrawal news before first ball.[11][19]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track National Bank Open: Jessica Pegula vs Kamilla Rakhimova 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

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%.