Roehampton: Iliyan Radulov vs Johannus Monday

Platform comparison

Market context

Iliyan Radulov and Johannus Monday are scheduled to compete in a tennis match at Roehampton on 17 August 2026, with the contest originally set for 5:00 AM ET. The market currently reflects a 100% implied probability for Radulov's advancement, suggesting near-certainty among traders. Settlement occurs by 24 August 2026, allowing a seven-day window for completion; any cancellation, tie, or delay beyond that threshold triggers a 50-50 resolution.

Prediction markets pricing this fixture at absolute certainty warrant scrutiny against comparable lower-tier professional matchups. Radulov, a Bulgarian player ranked outside the ATP top 200, has limited recent tournament history at established venues. Monday, a South African competitor with similarly modest ranking credentials, represents an opponent whose form and availability remain difficult to verify through standard tennis databases. Historical precedent suggests that matches between players of this ranking tier—particularly at secondary circuits—carry material completion risk and upset probability that rarely justifies 100% pricing on either competitor.

Traders should monitor Roehampton's official draw announcements and ATP Challenger scheduling confirmations through late July, as lower-tier events frequently experience withdrawals or bracket restructuring. Recent injury reports or late withdrawals from either player would signal repricing risk. The 5:00 AM ET scheduling is atypical for televised matches and may indicate a qualifying round or secondary court assignment, which carries higher cancellation exposure than main-draw fixtures. Cross-platform comparison with Kalshi or major sportsbooks would clarify whether this extreme probability reflects genuine information asymmetry or liquidity constraints in the prediction market.

Methodology

This page reviews Roehampton: Iliyan Radulov vs Johannus Monday across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

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 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.

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?

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