Colts vs. Patriots

Platform comparison

Market context

The Indianapolis Colts will face the New England Patriots on 13 August at 7:30 PM ET in a preseason matchup. The current 50-50 split reflects genuine uncertainty about a game between two franchises with divergent trajectories. Indianapolis enters the 2024 preseason with a restructured roster following Anthony Richardson's injury concerns, whilst New England continues its transition away from the Brady era. Preseason contests carry inherent volatility—depth chart decisions, injury management, and coaching philosophy all influence outcomes in ways that differ markedly from regular season play.

Historical preseason records offer limited predictive value for these specific opponents. Over the past five seasons, neither team has established dominance in August fixtures; the Patriots' preseason win rate hovers near 50 per cent, as does the Colts'. What matters more is roster composition heading into the game. Recent reporting from NFL.com and ESPN has highlighted Indianapolis's offensive line concerns and New England's defensive secondary depth, both factors that could swing a low-stakes preseason contest.

Traders monitoring this market across platforms—Polymarket's implied probability format versus Kalshi's decimal odds presentation, or Betfair's commission structure—should note that preseason games carry elevated postponement risk due to weather and player safety protocols. The settlement window's extension clause (remaining open if postponed) differs from some traditional sportsbooks' handling of August fixtures. Injury announcements in the 48 hours before kickoff typically move the needle most significantly; watch for official team injury reports released Thursday and Friday preceding the game.

Methodology

This page compares Colts vs. Patriots specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.