Libema Open: Greet Minnen vs Janice Tjen

Platform comparison

Active sub-markets

Market context

The Libema Open grass-court tournament in 's-Hertogenbosch will host a first-round encounter between Belgian qualifier Greet Minnen and Dutch player Janice Tjen on 9 June 2026. The 0% implied probability reflects either minimal trading activity or strong conviction that this match will not reach completion as scheduled. Given the tournament's established status on the WTA calendar and standard scheduling protocols, outright cancellation remains unlikely unless weather or injury intervenes in the final days before play.

Historical precedent for matches between lower-ranked or qualifying-round players shows that withdrawal or retirement occurs in roughly 3–5% of scheduled WTA first-round encounters, typically announced within 48 hours of the match. Minnen, a Belgian player with limited recent WTA main-draw appearances, and Tjen, competing primarily on ITF circuits, represent the profile where late withdrawals are more common than among seeded players. The seven-day delay clause in the settlement terms creates additional resolution risk if either player sustains injury during warm-up or practice.

Traders should monitor the official Libema Open draw confirmation and any injury bulletins from either player's camp through early June. Weather forecasts for 's-Hertogenbosch in mid-June typically show low cancellation risk, though grass courts can be affected by rain. The tournament's scheduling announcements, usually finalised one week prior, will clarify court assignments and exact timing. Any withdrawal announcement would likely come via WTA or tournament social media channels rather than traditional news outlets.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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?

Prediction Today 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.

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 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.

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.