Colts vs. Patriots

Platform comparison

Market context

The Indianapolis Colts face the New England Patriots on 13 August at 7:30 PM ET in what will be a preseason NFL contest. Polymarket currently prices this at 51% for a Colts victory, suggesting near-parity between the two franchises in trader expectations. The conditional token structure on Polygon means positions settle in USDC once the game concludes and the result is confirmed on-chain, with the settlement window closing at 23:30 UTC that evening—allowing roughly four hours post-game for result verification.

Preseason matchups carry historical volatility in prediction markets because roster composition remains fluid and coaching staff rotation patterns vary unpredictably. The Colts have won three of their last four preseason openers since 2021, whilst the Patriots have shown inconsistent results in August play under interim or transitional coaching arrangements. Recent preseason spreads between comparable AFC East and AFC South opponents have typically favoured the home team by 2–3 points; the venue for this fixture will influence trader positioning materially.

Key catalysts include injury announcements from either squad's training camp, which typically emerge 48–72 hours before preseason games, and any last-minute roster moves affecting starting lineups. The Patriots' quarterback situation and the Colts' offensive line depth remain areas where late developments could shift market pricing. Weather conditions at game time—if played outdoors—and official confirmation that neither team rests key players entirely will also drive trader adjustments closer to kickoff.

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

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%.