CD Castellón vs. SD Eibar

Platform comparison

Active sub-markets

Market context

CD Castellón travel to face SD Eibar in La Liga 2 on 31 May 2026, with the match forming part of the final weekend of the season. The 100% implied probability reflects either settled expectations around fixture completion or an absence of material uncertainty priced into the market at present.

Castellón finished the 2024–25 campaign in mid-table, whilst Eibar secured promotion back to La Liga after winning La Liga 2 the previous season. Historical precedent suggests that final-day fixtures between clubs with divergent seasonal objectives—one potentially resting players, the other chasing specific targets—introduce volatility that markets sometimes underprice. The gap between these clubs' trajectories creates asymmetric incentives that can affect team selection and intensity. Eibar's recent promotion success and Castellón's consolidation phase represent distinct competitive postures entering the fixture.

Traders should monitor squad news in the fortnight before 31 May, particularly injury confirmations and any late-season suspensions that might force tactical adjustments. Eibar's approach to the final match—whether they field a full-strength eleven or rotate ahead of potential Copa del Rey commitments—will be material. Local reporting from Castellón and Eibar's official channels typically confirms team news by the Friday preceding the Sunday fixture. Fixture congestion earlier in May could influence recovery protocols for either side. The settlement window closes at 16:30 GMT on match day, allowing only the standard pre-match window for late-breaking developments to affect the market.

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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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.

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.

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.