Ilkley: Mary Stoiana vs Celine Naef

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Active sub-markets

Market context

The Ilkley grass-court tournament will host a first-round singles match between Mary Stoiana and Celine Naef on 13 June 2026. The market settles on whether Stoiana advances past Naef, with a 50-50 resolution triggered if the match is cancelled, delayed beyond seven days without completion, or ends in a retirement before a winner is determined. The settlement window closes 20 June 2026 at 13:00 UTC, allowing a one-week buffer for rescheduling or completion.

Stoiana and Naef occupy similar career trajectories within the lower-ranked professional circuit, making historical head-to-head records and recent form the primary differentiators. Direct comparison data remains sparse for most grass-court specialists outside the top 100, meaning traders should cross-reference WTA rankings, recent tournament results, and surface-specific performance metrics rather than relying on established patterns. The 0% implied probability suggests either missing information or a systematic undervaluation of one player's capabilities relative to the other.

Traders monitoring this match should track tournament draw confirmations, injury announcements, and weather forecasts for the Ilkley region in mid-June, as grass courts are particularly susceptible to rain delays. Conditional order logic would benefit from linking settlement to official WTA announcements rather than relying solely on match-day broadcasts. Any withdrawal notice from either player typically arrives 48–72 hours before scheduled play, providing a narrow window for position adjustments. The settlement criteria explicitly favour the 50-50 outcome if administrative delays exceed seven days, making fixture stability a material variable for programmatic traders.

Methodology

This page reviews Ilkley: Mary Stoiana vs Celine Naef 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 App 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 App 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 App UK?

Zero. Polymarket App 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 fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.