1. FC Cologne vs. Real Sociedad San Sebastian

Platform comparison

Market context

1. FC Köln’s club friendly against Real Sociedad in Cologne is listed for 8 August 2026, with the venue and kick-off time confirmed by both clubs and match trackers.[3][8][13] For a market sitting at a 100% YES crowd-implied probability, the key issue is not whether the fixture exists, but whether the settlement window closes only if the named match is actually played by the deadline, so any programmatic workflow should anchor to the official fixture notice rather than the crowd price alone.[3][8]

Comparable cases point to why an apparently “certain” friendly still needs checking against schedule risk. The clubs last met in European competition in 1988/89, when Real Sociedad edged Köln 1-0 in San Sebastián, while UEFA’s head-to-head record shows one win apiece and one draw across the two legs, a reminder that the pairing has prior competitive history but no recent pattern to extrapolate from.[4][5][7] More usefully for model design, the official FC Köln preview describes this as a “highlight test match” and says the sides also tested behind closed doors the evening before, which is the kind of double-header detail that can distort lineup assumptions and create false confidence if a bot only ingests the public fixture card.[3][6]

A trader watching this market should monitor final team announcements, any change to the closed-door match arrangement, and whether the public friendly keeps its scheduled kick-off after the private run-out the night before.[3] Real Sociedad’s club news also frames them as the reigning Copa del Rey holders, which is relevant mostly as a strength signal, but in a test match the bigger dependency is rotation and minutes management rather than season-long quality.[6] For tooling, that means conditional orders should probably key off official club posts and live fixture feeds, not pre-match consensus, because the main failure mode here is administrative change, not sporting upset.[3][8]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track 1. FC Cologne vs. Real Sociedad San Sebastian across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Kalshi Fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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?

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