Roehampton: Matteo Martineau vs Lui Maxted

Platform comparison

Market context

Matteo Martineau and Lui Maxted are scheduled to meet in the opening rounds of the Roehampton tournament on 17 August 2026. The match carries a settlement window extending to 24 August, allowing seven days for completion before the contract resolves to a 50-50 split if unfinished. The 0% implied probability on this market suggests either extreme confidence in one player's advancement or minimal liquidity at present, a pattern common in early-season grass-court fixtures where sportsbook lines often diverge sharply from prediction-market pricing.

Roehampton's grass-court conditions favour players with strong serve-and-volley mechanics and quick court movement; historical data from ATP Challenger events at the venue show that seeding and recent hard-court form carry less predictive weight than surface-specific preparation. Martineau and Maxted's respective records on grass in the preceding weeks—particularly performances at Wimbledon qualifying or other UK-based tournaments—will be critical indicators. Players who have competed on similar surfaces immediately before Roehampton typically advance at higher rates than those transitioning directly from clay or hard courts.

Traders should monitor official tournament draws and any late withdrawals, which occur frequently in August when players manage injury recovery or schedule conflicts. Weather delays are also material; extended rain could push matches beyond the seven-day window. Current sportsbook odds, if available through major European operators, should be cross-referenced against this market's settlement terms, as discrepancies often signal mispricing when one venue factors in withdrawal risk more heavily than another.

Methodology

We track Roehampton: Matteo Martineau vs Lui Maxted 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

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.

FAQ

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 PolyGram. 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.

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.

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.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.