14.8% of NFL games from 2015 to 2025 were decided by exactly 3 points.
01 · Why margins bunch
Why margins bunch on 3 and 7
Most NFL scoring comes in field goals (3) and touchdowns with the extra point (7). A close game is often settled by one late score, so the final margin lands on one of those values far more often than on its neighbours. That is what a key number is: a margin that happens much more often than the ones around it.
| Margin | Games | Share |
|---|---|---|
| 3 | 449 | 14.8% |
| 7 | 263 | 8.7% |
| 6 | 210 | 6.9% |
| 14 | 156 | 5.2% |
| 10 | 144 | 4.8% |
| 4 | 140 | 4.6% |
| 2 | 139 | 4.6% |
| 1 | 137 | 4.5% |
Three alone decided 14.8% of games, more than 7 (8.7%) and far more than 2 (4.6%) or 4 (4.6%). Six, ten and fourteen also stand out, all built from the same scoring blocks.
02 · Pushes
What a key number does to a spread
A spread of exactly 3 can push: a 3-point win returns your stake. Of 433 games that closed with a spread of 3, 44 landed on it (10.2%). At 7 it was 11 of 172 (6.4%). At 2.5 and 3.5 a push is impossible, which is exactly why those half-points are so valuable.
Spread of 3, pushed
10.2%
Spread of 7, pushed
6.4%
Worked example · Favourite −3 against −2.5
- Favourite wins by exactly 3
- 14.8%
- At −3
- push, stake back
- At −2.5
- win
Moving the favourite from −3 to −2.5 turns every 3-point win from a push into a win. Moving the underdog from +3 to +3.5 turns every 3-point loss into a win. That is why books charge more for those half-points than for any other, and why the half-point calculator prices them separately.
03 · Using it
How to use key numbers
- Shop around 3 and 7. A book at −2.5 when others are at −3 is worth more than its price difference suggests.
- Do not pay much to cross 4 or 5. Moving from −4.5 to −4 crosses a much rarer margin, so it is worth less.
- Teasers lean on key numbers. A six-point teaser that moves a line across both 3 and 7 picks up the two most common margins. The teaser calculator shows the price you need.
- Totals are much flatter. The most common NFL final total from 2015 to 2025, 51, came up in only 3.9% of games. No total is anything like 3 on a spread.
Before you bet
What this means for your next bet
- Before betting a spread near 3 or 7, check every book for the half-point.
- Value a half-point by the margin it crosses: 3 most, then 7, then 6 and 10.
- Use teasers only when they cross 3 and 7 together.
- College football bunches less: 3 decided 8.3% of college games from 2015 to 2025, about half the NFL rate.
Method
How we measured this
Every regular-season and playoff game from the 2015 to 2025 seasons with a final score. Margin is the absolute difference between the two scores. A push is a game whose home margin equalled its closing spread exactly. Shares are counts divided by the number of games.
- Sample
- 3,028 NFL games with final scores
- Window
- Sep 10, 2015 to Feb 8, 2026
- Measured
- Oct 29, 2026
- Source
- NFL schedule and results archive, closing spreads included
Questions3 questions
What are the key numbers in NFL betting?
The final margins that come up most often. From 2015 to 2025, 14.8% of NFL games were decided by exactly 3 and 8.7% by exactly 7, followed by 6, 14 and 10.
How often do NFL games land on 3?
449 of 3,028 games from 2015 to 2025, or 14.8%. Of games that closed with a spread of exactly 3, 10.2% pushed.
Is −2.5 better than −3?
For the favourite, yes: every 3-point win becomes a win instead of a push. Books know it, so −2.5 usually costs more juice than −3. Whether it is worth the extra depends on the price difference.
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