National Bank Open: Daniel Merida Aguilar vs Alex Michelsen

Platform comparison

Market context

Daniel Merida Aguilar and Alex Michelsen are due to meet in Montreal, and the market is being priced as a live third-round hard-court match rather than a draw to a title run. Michelsen owns the only previous head-to-head meeting, beating Merida Aguilar in straight sets earlier in 2026, which is the cleanest historical marker behind the current **37%** crowd-implied probability for Merida Aguilar.[1][9][11]

That prior result matters because it came on hard court as well, the same surface used at the National Bank Open, which usually strengthens the value of direct matchup evidence over generic rankings alone.[9][16] The wider market has also leaned towards Michelsen, with several previews listing him as the favourite, so the current price still leaves Merida Aguilar needing to outperform both form and precedent to get the upset.[11][13]

The main catalysts are straightforward: whether the match is actually completed, whether the schedule shifts, and whether either player withdraws before play starts. Tournament listings and live match pages show the contest as an upcoming Rogers Court fixture on 7 August, but live sources can update quickly if the order of play changes or the match slips beyond the settlement window.[5][15][16] If the match is not played at all, is tied, or is delayed beyond seven days without a winner, the market resolves to 50-50 under the stated rules.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track National Bank Open: Daniel Merida Aguilar vs Alex Michelsen 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

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 Prediction Today. 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%.