Start with the competition, not the teams
A short, heavily scheduled season with one game a week for most teams. That spacing concentrates information: injury reports, practice participation and weather forecasts all land within a narrow window before kickoff.
Read the market definition
Spread and total dominate volume, with moneylines on the shorter weeks and a deep prop board on national games. Alternate spreads and team totals extend the menu on marquee fixtures.
What actually moves the line
Quarterback availability moves a line more than any other single factor. Beyond that, weather — particularly wind — affects totals, and short-week travel can show up in the number before any news breaks.
Settlement questions specific to NFL
The edge cases are weather-driven. A game abandoned or shortened has a specific rule, and a tie is a real outcome in the regular season. Confirm how the spread handles a push on a whole number.
Where to get information
Injury designations, official practice reports and game-day inactive lists are the primary sources. Team announcements are more reliable than aggregated speculation.
Set the limit before the price
Every league on this site is priced because outcomes are uncertain. Understanding NFL markets improves your reading of a number; it does not remove that uncertainty. Decide a fixed stake and a session boundary before you look at a price, and treat both as settled.