National Bank Open: Alex Michelsen vs Francisco Cerundolo

Platform comparison

Market context

Alex Michelsen’s match with Francisco Cerundolo is priced by the crowd at **59%**, which makes Michelsen the market favourite but not a strong one. That leaves Cerundolo as the live underdog side in a fairly tight spot, with the market implying a near 41% chance for the Argentine to progress.

The main historical frame is the head-to-head split: they are level at 1-1 overall, but the surface split is the key detail for a hard-court event. Cerundolo beat Michelsen in Vienna on hard court in 2025, while Michelsen won their grass-court meeting at Halle the same year; that gives traders a mixed sample rather than a clean edge for either player.[1][4][9] If you are looking for a value angle, the case for Michelsen is that the crowd has still made him favourite despite no dominant head-to-head lead, while the contrarian case for Cerundolo is that he has already shown he can handle Michelsen on hard courts.[1][4]

For catalysts, the main watchpoints are whether both players are confirmed in the draw and whether the match keeps its original schedule, because the market only resolves to a player if the match is actually completed with a winner.[Market description] Live draws, order-of-play changes and any weather-related delay matter more here than usual, because a postponement beyond seven days would push the market to 50-50.[Market description] Recent live listings show the fixture is active in tournament coverage, but traders will still want to track the official National Bank Open schedule and any late withdrawal or walkover risk before the 14:00 UTC settlement window closes.[2][6]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews National Bank Open: Alex Michelsen vs Francisco Cerundolo 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 Who Will Win, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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 Who Will Win. 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.

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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%.