Roehampton: Iliyan Radulov vs Johannus Monday

Platform comparison

Market context

The Roehampton grass-court tournament will host a first-round encounter between Bulgarian qualifier Iliyan Radulov and Johannus Monday, originally scheduled for 17 August 2026 at 5:00 AM ET. The current crowd-implied probability stands at 100% for Radulov, suggesting near-unanimous backing for the Bulgarian player to progress. This extreme consensus warrants scrutiny, particularly given the settlement window extends to 24 August—a seven-day buffer that introduces material risk around match delays or cancellations on grass, where weather disruption remains commonplace.

Historical precedent on grass-court qualifiers shows considerable volatility. Radulov's pathway through qualifying rounds typically exposes stamina concerns against fresh opponents in main-draw play; conversely, Monday's record against seeded or higher-ranked players on grass surfaces remains sparse in available databases, limiting comparative analysis. The 100% probability reflects either overwhelming statistical advantage for Radulov or insufficient market liquidity to price Monday's genuine chances. Grass tournaments frequently produce upsets when lower-ranked players capitalise on serve-and-volley strengths or exploit fatigue from qualifying runs.

Traders should monitor official tournament scheduling updates, particularly any weather forecasts approaching the match date or announcements regarding player withdrawals or injury status in the days preceding play. Early-morning scheduling (5:00 AM ET) may favour whichever player has demonstrated superior performance in low-light conditions on grass. Any delay beyond the original date without completion triggers the 50-50 resolution clause, creating hedging opportunities if inclement weather appears probable.

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Who Will Win 2026, 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?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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 Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.