Lexus Eastbourne Open, Qualification: Matteo Arnaldi vs Alastair Gray

Platform comparison

Active sub-markets

Market context

Matteo Arnaldi’s qualifying match against Alastair Gray at Eastbourne is already the key event, and the live-market setup is straightforward: once a ball is played, the market resolves on the on-court winner, while a no-show, walkover, or cancellation can still force a 50-50 outcome under the stated rules. Public score data show Arnaldi winning that qualifying match 7-6(3), 7-6(4), which is the kind of completed-result signal a bot would treat as final rather than probabilistic once it is confirmed by the tournament feed.[1][5]

The 100% crowd-implied price reflects a market that has already been resolved in practice rather than a live coin-flip, so the useful comparison is to other ATP qualification markets where the operational risk sits in scheduling, retirements, and late withdrawals, not in the pre-match skill gap. Kalshi’s own tennis rules note that if a match does not begin, or is postponed, the contract can settle differently from the on-court result, which is exactly why programmatic traders monitor “ball played” status, official scoreboards, and whether the fixture has actually gone live before assuming a binary outcome.[2]

For tooling, the main catalysts are status updates from the ATP live stats centre, third-party live scores, and any rescheduling or withdrawal notice ahead of the settlement window closing on 27 June 2026. In automation terms, the cleanest workflow is to poll the tournament’s live and archive pages for a completed score, then cross-check against a secondary feed before letting conditional orders or copy-trading rules treat the market as closed.[3][4]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Lexus Eastbourne Open, Qualification: Matteo Arnaldi vs Alastair Gray across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Polymarket Bot UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Bot 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.

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 Polymarket Bot UK?

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

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.