Prostejov: Vitaliy Sachko vs Vit Kopriva

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Market context

Vitaliy Sachko faces Vit Kopriva in the Prostejov tournament on 4 June 2026, with the market currently reflecting near-certainty in Sachko's favour. The 100% implied probability suggests either strong consensus on the matchup or minimal trading activity, which is common for lower-tier ATP Challenger events where liquidity concentrates only after draw confirmation and player availability becomes certain.

Sachko, a Ukrainian player ranked outside the top 200, has competed sporadically on the Challenger circuit with mixed results on clay courts. Kopriva, a Czech player competing near home, typically holds a modest ranking advantage and familiarity with regional tournaments. Historical patterns in Prostejov draws show Czech-based competitors often attract modest local backing, though this rarely shifts opening-market probabilities significantly unless one player enters with recent form momentum. The settlement window extends to 11 June, allowing a seven-day buffer for delays or rescheduling common in lower-tier professional tennis.

Traders should monitor official tournament draws and player confirmations in the week before play, as withdrawals or late substitutions occur frequently at Challenger level. Sachko's recent match results and any injury reports will be critical; similarly, Kopriva's performance in qualifying rounds—if applicable—could shift the market if he enters the main draw unexpectedly. Court surface conditions and weather forecasts for early June in the Czech Republic may also influence in-play dynamics, though the current probability suggests the market has already priced in available information about both players' baseline capabilities.

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 Prediction Today, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

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 Prediction Today?

Zero. Prediction Today 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, Prediction Today 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.