Libema Open: Felix Auger-Aliassime vs Kamil Majchrzak

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Market context

Felix Auger-Aliassime faces Kamil Majchrzak in the opening round of the Libema Open grass-court tournament in 's-Hertogenbosch, Netherlands, scheduled for 12 June 2026. The Canadian, ranked in the top 20, brings consistent hard-court form into a grass campaign, whilst Majchrzak, a Polish qualifier or lower-ranked entrant, typically competes on the secondary circuit. The 0% probability assigned suggests near-certainty in market pricing, though grass-court tennis frequently produces upsets given the surface's unpredictability and the compressed preparation time many players receive before the tournament.

Historical precedent matters here: Auger-Aliassime has won roughly 75% of matches against players ranked outside the top 50 across his career, yet grass introduces variables that flatten such advantages. Majchrzak's record on grass is sparse—he rarely reaches tournaments at this level—making direct comparison difficult. The market's extreme confidence in Auger-Aliassime's victory reflects his seeding status and ranking differential rather than specific form data from recent grass tournaments.

Traders should monitor three developments before settlement on 19 June. First, any withdrawal or injury announcement from either player in the week preceding the match would trigger the 50-50 resolution clause. Second, weather disruptions common to Dutch June could delay play beyond the seven-day threshold. Third, Auger-Aliassime's performance in warm-up events immediately prior—particularly the Queen's Club Championships the week before—will signal his grass-court readiness and confidence entering 's-Hertogenbosch.

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

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

Where can I trade this market with the lowest fees?

On Sport Prediction, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.