National Bank Open: Jiri Lehecka vs Alexander Blockx

Platform comparison

Market context

The National Bank Open match-up between **Jiri Lehecka and Alexander Blockx** is priced by the crowd as a near-certainty, with the market sitting at **100% YES** for a Lehecka advancement. In handicapper terms, that leaves the consensus firmly on the favourite and implies almost no room for a contrarian Blockx view unless the market is misreading either form or an availability issue.

On paper, Lehecka has the cleaner case: he is the higher-ranked player and the established hard-court option, while preview pieces and betting markets have generally made him the pick to win this third-round match.[2][8][17] Comparable pre-match reads have still flagged some volatility in his recent level, with one betting preview noting that his form has made him “somewhat susceptible as a favourite at a steep price”, which is the sort of detail that creates the only real value angle for an underdog backer.[8] Blockx, by contrast, is being treated as the outsider, but not a complete write-off; one preview site even projected a competitive match with Blockx as a live 3-set upset angle, showing that the gap is not viewed as unbridgeable by all observers.[1][3]

For traders, the key catalysts are the live tournament schedule, any late change to court order, and whether the match is actually completed within the settlement window. At the time of the listings, the fixture was still being tracked as a third-round match in Montréal, with match pages showing a scheduled start around 00:05 UTC / 6:00 PM ET, but prediction markets here are only clean if a winner is formally decided rather than the match being abandoned, delayed beyond seven days, or otherwise unresolved.[4][6][15] That means the main contrarian angle is not simply Blockx winning on court, but also any disruption that creates a non-standard settlement outcome.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track National Bank Open: Jiri Lehecka vs Alexander Blockx 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%.