Lexus Eastbourne Open, Qualification: Matteo Arnaldi vs Alastair Gray

Platform comparison

Active sub-markets

Market context

Polymarket is pricing Matteo Arnaldi vs Alastair Gray at **100% YES** on the contract, which means the market is treating Arnaldi as a near-certain winner on the current conditional-token price. On Polymarket, that contract settles in USDC on Polygon, so the live price is the market’s estimate of whether Arnaldi advances, not a general view of his long-term form.[6][3]

That reading is best compared with earlier ATP qualifying markets where the price can sit at the extreme only when the listed winner is strongly expected and the event is effectively a binary settlement on match completion. In this case, the contract rules matter as much as the tennis: if the match is not played, or is delayed beyond the allowed window without a winner, it can still settle 50-50 rather than to either player.[3][6] ATP’s scores pages list the fixture as Eastbourne qualifying, which is the standard context for a short, straight-to-the-point market rather than a multi-day main-draw contract.[2][7]

For traders, the key catalysts are straightforward: any official schedule change, late withdrawal, walkover risk, or update on whether play actually begins. ESPN’s event listing shows the qualifying match on Court 2 at 6:00 AM, and the ATP live pages are the main place to confirm whether a ball has been played and whether the match progresses to a completed result.[8][7] Because Polymarket’s settlement depends on the contract rules, a pre-start cancellation or postponement can matter more than the pre-match price itself, even when the crowd is fully one-sided.[3][6]

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). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On Kalshi UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Kalshi UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

What does it cost to trade on Kalshi UK?

Zero. Kalshi UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.