Nottingham Open: Ann Li vs Kimberly Birrell

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Active sub-markets

Market context

The Nottingham Open, held on grass courts in the English Midlands, will feature American Ann Li against Australian Kimberly Birrell in the opening round, scheduled for 16 June 2026. The conditional token on Polymarket currently trades at 0% implied probability for Li's advancement, reflecting either extreme confidence in Birrell or minimal liquidity in the contract. Settlement occurs on 23 June, allowing a seven-day window for the match to conclude; any cancellation, tie, or unresolved outcome beyond that deadline triggers a 50-50 split of the pool.

Historical matchups between players of comparable ranking and surface experience suggest grass-court tournaments often produce tighter contests than hard-court equivalents, particularly when one competitor lacks extensive lawn-court preparation. Li, ranked around 80–100 on the WTA tour in recent seasons, has shown inconsistent results on grass, whilst Birrell's career trajectory on this surface remains modest. The 0% pricing likely reflects either a significant withdrawal or injury announcement rather than genuine predictive consensus; such extreme valuations on Polymarket frequently correct sharply once fresh information enters the market.

Traders should monitor WTA injury reports and official Nottingham Open draw confirmations through early June. Any withdrawal by either player would trigger the 50-50 resolution clause. Surface-specific form in the weeks preceding the tournament—particularly performances at qualifying events or warm-up matches—will provide concrete data for reassessing the contract's fair value before settlement closes.

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

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?

On Polymarket 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?

Polymarket 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.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket UK triggers a quick verification flow that finishes in minutes.

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.