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 amounts to an NFL preseason contest. Polymarket currently prices a Colts victory at 23 per cent, implying roughly 77 per cent probability for a Patriots win. The conditional token structure on Polygon settles USDC directly upon game completion, with the market remaining open only if postponement occurs; a cancellation or tie triggers a 50-50 split across both outcomes.

Preseason matchups between established franchises carry historical volatility that complicates straight-line probability assessment. The Patriots have won 11 of their last 15 preseason contests against AFC East opponents since 2018, though preseason records correlate weakly with regular-season performance and roster composition shifts dramatically year to year. The Colts' preseason record sits at 6–9 over the same window. Traders should note that preseason games often feature extensive rotation of backup quarterbacks and reserve lineups, making traditional offensive and defensive metrics less predictive than in regular-season play.

Key catalysts include official injury reports released 48 hours before kickoff, which may affect availability of any projected starters taking limited snaps. Weather conditions at the venue—typically manageable in August—rarely shift probabilities materially in preseason contests. Scheduling changes remain possible but unlikely given the fixed NFL calendar. Recent roster transactions, particularly any last-minute signings or cuts by either franchise, could signal coaching priorities around specific positions, though such moves rarely move preseason markets substantially. Settlement occurs at 23:30 UTC on 13 August, allowing roughly four hours post-game for on-chain confirmation.

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

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

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 Polymarket Scam?. 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.

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%.