1. FC Cologne vs. Real Sociedad San Sebastian

Platform comparison

Market context

Polymarket is pricing this 1. FC Köln v Real Sociedad friendly as a near-certainty, with the contract sitting at **100% YES** against the settlement question tied to the match outcome mechanics on Polygon using USDC and conditional tokens.[16] In plain football terms, that means the market is already assuming the listed fixture between Köln and Real Sociedad will be played and resolved in the way the contract specifies, so the main risk for holders is not ordinary match variance but whether the event structure, timing and settlement conditions stay intact.[16]

Comparable context matters because this is not an isolated competitive tie: Köln and Real Sociedad have a historical reference point from the 1988/89 UEFA Cup, while the clubs’ own pre-match material describes the August meeting as a summer test in Cologne and notes a closed-door game the night before.[13][8][5] That combination usually pushes traders towards high confidence that the fixture exists, but less confidence about line-ups, intensity and who actually takes meaningful minutes, which is why friendly markets often move differently from league or cup markets even when one side looks stronger on paper.[5][16]

The key catalysts are administrative rather than tactical: final team news, any late change to the closed-door and public schedule, and confirmation that the match starts as advertised at RheinEnergieStadion.[5][2] Recent listings and club notices agree on the venue and 8 August timing, while live match pages show the fixture as active in the calendar, so any trader watching the contract should focus on official club channels and matchday status rather than preseason form alone.[2][5][14] In this kind of USDC-backed, on-chain market, the settlement logic is fixed, but the probability can still be sensitive to cancellation, rescheduling or a wording mismatch in the eventual result feed.[16]

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 Kalshi UK, which mirrors the Polymarket order book directly.

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.

UK Frequently Asked Questions

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'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.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.