Grass Court Championships: Elise Mertens vs Liudmila Samsonova

Platform comparison

Active sub-markets

Market context

Elise Mertens and Liudmila Samsonova are scheduled to meet in the Grass Court Championships on 15 June 2026, with the winner advancing further in the tournament. The 0% implied probability suggests either a technical issue with market display or extremely high confidence in a specific outcome among traders. Both players have competed regularly on grass in recent seasons, though neither has dominated the surface consistently enough to warrant such extreme pricing without additional context.

Mertens has maintained a solid top-30 ranking across 2025 and early 2026, with mixed results on faster courts. Samsonova's grass-court record shows occasional strong performances but also early exits at major tournaments. Historical matchups between players of comparable ranking on grass typically see the higher-ranked player favoured by 55–65%, not 100%. The current probability warrants scrutiny: traders should verify whether the market reflects confirmed withdrawals, injury reports, or scheduling conflicts rather than pure performance expectations.

Key developments to monitor include official tournament draw confirmations, injury updates from either player's camp, and any weather-related postponements that might trigger the seven-day delay clause. The settlement window closes 22 June 2026, allowing a week beyond the scheduled date for completion. Recent grass-court results from both players during warm-up events in early June will provide the most reliable form indicators. Any announcement of withdrawal or medical concerns would immediately clarify whether the extreme pricing reflects known information or represents a market anomaly.

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Sport Prediction, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Is this market available outside the US?

Sport Prediction 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.

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.

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.

Do I need to KYC for this market?

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