Lions vs. Bengals

Platform comparison

Market context

The Detroit Lions face the Cincinnati Bengals on 13 August at 7:00 PM ET in an NFL preseason fixture. The 0% implied probability on this contract reflects either minimal trading activity or a technical quirk in how the market has been seeded, rather than genuine consensus that one outcome is impossible. Preseason games carry inherent unpredictability—rosters remain fluid, coaching decisions prioritise player evaluation over win-maximisation, and injury risk is elevated. Traditional sportsbooks typically decline to offer preseason lines or quote them with wide margins, making direct odds comparison difficult. Where lines do exist, they tend to reflect historical matchup data and current-season roster composition rather than sharp consensus.

The Lions and Bengals have met sporadically in recent preseason cycles, with neither franchise dominating the fixture. Preseason outcomes correlate weakly with regular-season performance, making historical head-to-head records a poor predictor. The 0% probability suggests the market may be awaiting clearer information on roster availability or injury status before meaningful trading commences. Traders should monitor official team announcements regarding starter participation—both franchises typically rest key players in August—and any last-minute schedule changes. Weather conditions at the venue and coaching staff decisions on playing time allocation will influence game flow more substantially than in regular-season contests.

The settlement window closes at 23:00 UTC on 13 August, allowing approximately 16 hours post-kickoff for resolution. The tie-resolution clause (50-50 split) is relevant given preseason games occasionally end level, though this occurs infrequently. Cross-platform comparison remains limited until mainstream sportsbooks publish preseason lines, if at all.

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.

FAQ

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 Kalshi vs Polymarket. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.