Nottingham Open: Ann Li vs Kimberly Birrell

Platform comparison

Active sub-markets

Market context

The Nottingham Open, a WTA 250 event held annually in the English Midlands, will feature a first-round match between American Ann Li and Australian Kimberly Birrell on 16 June 2026. Li, ranked in the 80–120 range on the WTA tour, has shown inconsistent results on grass courts, whilst Birrell, typically ranked 150–200, has limited recent grass-court exposure. The 0% implied probability suggests market participants view one player as overwhelmingly favoured, though both competitors have competed at comparable levels in recent seasons. Historical grass-court form and recent tournament results will determine the match outcome; neither player has established dominance in head-to-head records or on this surface.

From a regulatory standpoint, this market operates under distinct jurisdictional frameworks depending on trader location. Under German GlüStV rules, prediction markets on individual sports matches fall outside gaming licensing requirements if structured as financial derivatives rather than wagers, though operators must comply with KWG banking regulations. US CFTC oversight applies to US-domiciled traders; whilst prediction markets on event outcomes remain in a grey zone, the CFTC has asserted authority over certain binary options. The "no-KYC up to $1,500" threshold common on unregulated platforms reflects practical enforcement gaps rather than legal exemption—traders should verify their own jurisdiction's position before participation.

Traders should monitor official WTA scheduling confirmations, injury announcements from either player, and grass-court preparation tournaments in the weeks preceding 16 June. Surface conditions at Nottingham's outdoor courts and weather forecasts closer to the date may influence match dynamics. Settlement occurs 7 days post-scheduled date; matches delayed beyond this window without completion resolve 50-50, as do retirements after play begins.

Methodology

This page reviews Nottingham Open: Ann Li vs Kimberly Birrell 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 Tax 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 Tax 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 Tax 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.

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.

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.