NFL lines are built around key numbers, injuries, rest, weather and matchups. The most common final margins are 3 and 7, so half a point around those numbers can change the value of a spread bet.
What we check before an NFL play
- Injuries and quarterback status. The QB moves lines more than any other player.
- Rest and travel. Short weeks, byes and long road trips.
- Weather. Wind hurts passing and kicking more than cold does.
- Matchups. Pass rush against the offensive line, and who controls the trenches.
- Line history. Where it opened, where it is now and why.
Key numbers: 3 and 7
Field goals and touchdowns make 3 and 7 the most common NFL margins. Getting +3.5 instead of +2.5 can be the difference between a cover and a loss. Read more on line movement.
Why road dogs get a look
Public money often leans toward home favorites. When a road underdog's number drifts up for no football reason, that is a reason to look closer. It is not a reason to bet on its own.
NFL leg: Road Dogs +3.5 (-110) at Home Favs.
NFL parlays
NFL parlays are popular because the slate is small and everyone watches. Keep them small, and watch for legs that depend on each other. See what a parlay is.
Key takeaways
- Key numbers 3 and 7 drive spread value.
- QB news moves NFL lines most.
- Wind matters more than cold.
- A drifting road dog is a reason to look, not a pick.
Frequently asked questions
What are key numbers in NFL betting?
3 and 7, the most common final margins because of field goals and touchdowns.
When do NFL lines move the most?
Around injury reports during the week and on game day as inactives and weather become clear.
Does weather affect NFL totals?
Strong wind is the biggest factor. It can hurt passing and kicking and pull totals down.
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Picks from Nicky Brows, posted in the Discord with the why behind every play.
Join the Discord21+. Picks are opinions, not guarantees. All examples on this page are samples.



