1. FC Cologne vs. Real Sociedad San Sebastian

Platform comparison

Market context

1. FC Köln host Real Sociedad San Sebastian in a summer friendly, and the market’s **99% YES** price implies an almost fully expected kick-off rather than a close sporting call. That is broadly consistent with the fixture being officially announced by Köln for 8 August at 15:30 local time, with the game also listed by major live-score services as a Club Friendly[3][8].

The historical frame does not justify treating this as a binary competitive-strength signal. The clubs’ only competitive meeting came in the 1988/89 UEFA Cup, where Real Sociedad won the first leg 1-0 and the tie ended with Köln exiting after a 2-2 return leg in Cologne; UEFA’s head-to-head page records one draw and one Real Sociedad win across the two legs[4][6][13]. For odds comparison, that history is informative for pedigree but weak for pricing a modern pre-season match, where squad rotation and fitness priorities usually matter more than past results. A recent public xG/prediction analysis also called Real Sociedad a narrow favourite, but still gave Köln and the draw meaningful chances, underlining how friendlies can diverge from a near-certain market price[9].

The main catalysts for traders are team-news and schedule dependencies. Köln’s club announcement says the sides were also due to play a closed-door match the evening before, which raises the risk of heavy rotation and makes any pre-match model less stable than a normal one[3][9]. Official line-ups, late squad omissions, and whether either side treats the fixture as a full-strength rehearsal or a split-squad exercise will matter more than historical head-to-head data; a club-friendlies listing from SofaScore and ESPN confirms the scheduled time but not the selection approach[2][8][12].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets UK, 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.

UK Frequently Asked Questions

Is this market available outside the US?

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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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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