Kosice: Guido Justo vs Lilian Marmousez

Platform comparison

Active sub-markets

Market context

Guido Justo and Lilian Marmousez are scheduled to face off in Kosice on 25 May 2026, with the winner advancing in what appears to be a lower-tier professional circuit event. The Polymarket contract currently prices Justo's advancement at zero, reflecting either extreme confidence in Marmousez or, more likely, minimal liquidity and trading activity on this particular match. The settlement window closes 1 June 2026, allowing a six-day buffer beyond the scheduled date for the match to conclude and a winner to be determined on-chain.

Both players compete primarily on the Challenger and ITF circuits, where upsets and withdrawals occur with notable frequency. Historical precedent suggests that matches at this level carry genuine uncertainty—neither player commands the ranking or seeding advantage that would justify a zero probability assessment. The 0% pricing likely reflects the market's thinness rather than informed conviction about the matchup itself. Comparable Challenger-level matches on Polymarket have typically settled with more balanced probability distributions unless one player held a substantial ranking advantage or recent form edge.

Traders should monitor the official ATP Challenger Tour schedule for any venue changes or cancellations affecting the Kosice event, as spring European tournaments occasionally face weather delays. Recent ITF and Challenger results for both players—particularly head-to-head records and surface performance—will become relevant data points as the match approaches. Any withdrawal announcements or injury disclosures in the fortnight before 25 May would trigger the 50-50 resolution clause, making early position management critical for USDC holders on Polygon.

Methodology

We track Kosice: Guido Justo vs Lilian Marmousez on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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?

PolyGram 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 does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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, PolyGram triggers a quick verification flow that finishes in 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.