ITF Roehampton: Charles Broom vs Oliver Tarvet

Platform comparison

Market context

Polymarket is pricing this Charles Broom v Oliver Tarvet contract at **100% YES**, so the market is effectively treating Broom’s advance as a done deal on Polygon, with settlement handled through USDC-backed conditional tokens. That is consistent with live tennis feeds showing Broom ahead and the Roehampton match being played on grass in ITF Men M25 competition, while the contract itself still only resolves on the documented match outcome rather than on rankings or pre-match odds.[1][2][17]

The main comparable frame is form and level: Broom is the higher-ranked player, and both TennisTemple and SofaScore list him well above Tarvet in ATP ranking terms, while pre-match prices elsewhere also leaned towards Broom as the shorter side.[1][2][4][16] That said, lower-tier ITF events can still turn on volatility, but there is no head-to-head history to complicate this matchup, which leaves recent form and live state as the clearest read for traders.[3][7]

What matters now is whether the match is officially completed within the settlement window and whether any retirement, walkover or scheduling disruption changes the token outcome. Polymarket’s rules say an unplayed cancellation, tie, or delay beyond seven days pushes the market to 50-50, so traders should watch the event feed and any organiser updates on completion status rather than assume a winner from partial scoring alone.[17]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track ITF Roehampton: Charles Broom vs Oliver Tarvet 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

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 Polymarket Alternative UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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%.