Roehampton: Oliver Tarvet vs Charles Broom

Platform comparison

Market context

The Roehampton tournament fixture between Oliver Tarvet and Charles Broom was originally scheduled for 20 August 2026 at 6:00 AM ET. On Polymarket, this contract currently trades at 100% YES, meaning the conditional token for Tarvet advancing has absorbed all available liquidity at the ask side. This pricing reflects either extreme confidence in Tarvet's victory or, more likely given the settlement window extending to 27 August, minimal trading activity and depth on what remains a relatively obscure lower-tier professional match.

Historical precedent from ATP Challenger and ITF circuit markets shows that 100% pricing on such fixtures typically indicates either a significant ranking disparity between competitors or that the market has simply failed to attract meaningful participation. Tarvet, a British player ranked outside the top 200, faces Broom, similarly positioned in the professional pyramid. When comparable matches between players of equivalent standing have traded on prediction markets, the implied probabilities have rarely exceeded 70% for either contestant absent injury news or withdrawal announcements. The current 100% reading should be treated as a liquidity signal rather than a genuine assessment of match outcome.

Traders monitoring this contract should watch for official tournament updates from the Lawn Tennis Association regarding scheduling confirmations, particularly given the early morning start time which occasionally triggers rescheduling. Any withdrawal announcement from either player—common at Challenger level where players frequently manage injury or fatigue—would trigger the 50-50 resolution clause. The settlement window's seven-day buffer beyond the original date provides cover for minor delays, but matches abandoned mid-play due to weather or injury would similarly resolve split.

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Scam?, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 Scam?. 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%.