Once Caldas vs. América de Cali - More Markets

Platform comparison

Market context

Once Caldas v América de Cali is a Colombia Primera A match scheduled for 5 August at 9:30 PM ET, and Polymarket is pricing the linked “More Markets” contract at **0% YES** on the current crowd read. In practice, that means the contract sits on Polygon and settles in USDC through conditional tokens, so the market is trading only the specific resolution terms rather than the football result in the abstract.

For historical context, this fixture has tended to be tight and draw-heavy. Across recent head-to-head records, the sides have split wins roughly evenly, with a large share of draws: one dataset shows 37 meetings since 2005 with 17 draws, while others for the shorter recent sample show 11 or 12 draws in 21–22 matches.[1][6][8] The last competitive meeting before this fixture ended 1-1 on 30 January 2026, and several recent encounters have finished 0-0, 1-1 or by a one-goal margin, which is the kind of pattern traders often use when judging whether a “More Markets” contract is likely to resolve YES.[10][16]

The main catalysts to watch are team-news announcements, late schedule changes, and whether the market’s exact settlement wording depends on a specific sub-market outcome rather than the final score alone. Because these contracts resolve on precise, on-chain criteria, a late alteration to kick-off time, venue, or match status can matter as much as form; by contrast, fresh line-ups and confirmed starters mainly affect trader sentiment, not the resolution mechanics themselves. Recent fixture listings and live match pages still show the game as a standard Colombia Primera A meeting, with no indication from the available sources of a postponement or venue change.[14][18]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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

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.

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%.