National Bank Open: Daniil Medvedev vs Botic van de Zandschulp

Platform comparison

Market context

Polymarket is pricing Daniil Medvedev to beat Botic van de Zandschulp at about **26% YES** in USDC on Polygon, which is below the market’s own opponent price and well under the around-73% Medvedev probability implied by other prediction venues and bookmaker-style lines. That gap matters on Polymarket because the contract settles through conditional tokens against the match result, so the quoted price is a direct view of how traders think the winner-or-tie logic will resolve, not a generic tennis forecast.[1][13][18]

The historical frame points towards Medvedev rather than an upset. Polymarket’s event page describes him as a heavy favourite, citing a top-10 level ranking, stronger hard-court pedigree, and a 4-0 head-to-head record on the surface, with prior meetings won in straight sets.[1] Comparable market lines are similarly one-sided: recent odds feeds price Medvedev around -475 and van de Zandschulp around +475, while other previews also call Medvedev the likely winner in two sets.[3][6][20]

For traders, the main catalysts are simple but important: confirmation the match starts on schedule, any late update to the National Bank Open order of play, and whether either player withdraws or the fixture is pushed beyond the settlement window, which would trigger the market’s 50-50 fallback rather than a normal winner resolve.[7] Because the contract is linked to a specific ATP second-round match, the price can move quickly on a courtside delay, a revised start time, or a tournament announcement affecting whether the match is actually played.[7][14]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews National Bank Open: Daniil Medvedev vs Botic van de Zandschulp 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 Polymarket Alternative 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

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 Alternative UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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%.