Nottingham Open: Sara Bejlek vs Karolina Pliskova

Platform comparison

Active sub-markets

Market context

The Nottingham Open grass-court fixture between Sara Bejlek and Karolina Pliskova is scheduled for 16 June 2026 at 09:00 ET. On Polymarket, conditional tokens representing each player's advancement are trading at prices reflecting near-certainty for Bejlek, with the market currently pricing her victory at approximately 100% implied probability. Settlement occurs on 23 June, allowing a seven-day window for the match to conclude; any cancellation, tie, or unresolved outcome beyond that threshold triggers a 50-50 split of USDC collateral across both conditional token positions on Polygon.

Pliskova, a former world number one and two-time Grand Slam finalist, has historically dominated lower-ranked opponents on grass despite inconsistent recent form. However, Bejlek's ranking trajectory and recent performances on the WTA circuit suggest the market may be overweighting the Czech veteran's pedigree. Comparable early-round grass-court upsets at Nottingham have occurred when younger players exploit serve-and-volley specialists' declining mobility; the 2024 edition saw several seeded players exit unexpectedly to unranked qualifiers.

Traders should monitor official Nottingham Open draw confirmations and any late withdrawals through the ATP/WTA injury report channels. Weather disruptions are material on grass courts—the UK's June forecast and court maintenance schedules will affect scheduling certainty. Pliskova's recent match fitness and any pre-tournament statements from either player's camp represent key catalysts. The settlement window's seven-day buffer provides substantial protection against minor delays, though extended rain or player illness could trigger the 50-50 resolution clause.

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

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 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.

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.

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.