ITF Roehampton: Charles Broom vs Oliver Tarvet

Platform comparison

Market context

Charles Broom and Oliver Tarvet are in a grass-court ITF Men’s event at Roehampton, with the market hinging on which player ultimately advances rather than on any scoreline or set count. Live tennis feeds show Broom ahead in the match and ranked higher on the ATP ladder, around No. 283–289, versus Tarvet around No. 433–436, which is consistent with a heavily one-sided market price but does not by itself decide settlement if the match is interrupted or voided.[1][4][7]

The key framing is that this is an ITF-level best-of-three match on grass, a format where short matches and weather delays can still produce settlement risk if play is abandoned or pushed beyond the seven-day window. Comparable stats services also show no prior head-to-head, so pre-match pricing is driven more by current form and ranking than by a direct matchup history; Broom’s 2026 win rate is listed in the mid-60s on several databases, while Tarvet’s is lower on the year, although the exact figures vary by source.[2][8][17]

For traders, the main catalysts are simple: completion of the live match, any official retirement or walkover notice, and whether Roehampton scheduling slips because of rain or backlog. On-chain, the contract settles in USDC, so the practical question is whether the result is final before the cutoff; if not, the market can revert to a 50-50 outcome even when one player was leading in-play. Broader crypto conditions are secondary here, but BTC and ETH volatility, funding, or whale flows only matter insofar as they affect liquidity and hedging appetite around the USDC position rather than the tennis result itself.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reads ITF Roehampton: Charles Broom vs Oliver Tarvet on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

UK Frequently Asked Questions

What are crypto prediction markets?

Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.

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Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.

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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.

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