Hagen: Tom Gentzsch vs Henri Squire

Platform comparison

Market context

Polymarket’s contract is pricing **Tom Gentzsch** at **100% YES**, which means the market is effectively treating a Gentzsch advance as certain and assigning negligible value to the Squire side. On-chain, the position settles in USDC on Polygon through conditional tokens, so the key issue for holders is not the bookmaker line but whether the match produces a completed winner before the settlement window closes.

That pricing is notably firmer than the pre-match sportsbook consensus. Listed odds from multiple tennis books put Gentzsch around 1.57–1.65, with Squire roughly 2.10–2.25, implying Gentzsch as the favourite but still leaving material room for upset risk[2][3]. Polymarket’s near-certain pricing is the kind that usually appears when liquidity is thin and traders anchor to the favourite rather than to the possibility of a void, retirement or scheduling disruption. The market description matters here: if the match is not played, ends level, or is delayed beyond seven days without a winner, the contract resolves 50-50 rather than to either player.

For traders, the main catalysts are the official match order, any start-time change, and whether the fixture is actually completed within the settlement rules. The listed start times vary across sources, with the match shown for 11:00 local on one sportsbook feed and 15:00 on others, which is a reminder that schedule updates can move quickly in Challenger events[1][2][3]. If play is interrupted after the first point or mid-match, the decisive factor is whether one player is officially credited with advancement; retirements are outcome-relevant, while a washout or prolonged postponement pushes the market towards the 50-50 fallback.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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

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.

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%.