What Is a Point Spread?
A spread handicaps the favorite by a number of points so both sides are close to a coin flip — turning a lopsided game into an even-money bet.
How a spread works
The favorite 'gives' points and the underdog 'gets' them. To win a bet on the favorite, it must win by more than the spread. The underdog covers if it wins outright or loses by less than the spread.
Spreads make mismatched games bettable: instead of asking who wins, you're asking by how much.
Eagles -3.5 vs. Cowboys +3.5. Bet the Eagles and they must win by 4 or more. Bet the Cowboys and you win if they lose by 3 or fewer — or win outright. Most spreads are priced at -110 each side.
Pushes and the hook
When a spread is a whole number, the game can land exactly on it — a push, where your stake is returned. A team favored by 3 that wins by exactly 3 results in no winner.
The half-point — the 'hook' — removes pushes. -3.5 can't push; the game is either a cover or not. Buying or selling a half-point changes the price, which matters most around key numbers.
Key numbers matter
In the NFL, final margins cluster on 3 and 7 because games are decided by field goals and touchdowns. A spread of 3 is far more valuable than 2.5 or 3.5, so moving across a key number is worth more than moving across an ordinary one. NBA margins are smoother, so no single number dominates.
Buying from -3 to -2.5 in the NFL is expensive because it crosses the most common margin. Buying from -8 to -7.5 costs less. Parlae's Half-Point Calculator tells you whether the price you're charged is fair.
Key takeaways
- A spread is a bet on the margin, not the winner.
- The favorite must win by more than the number; the underdog can lose by less (or win).
- Whole-number spreads can push; the half-point hook removes that.
- Key numbers (3 and 7 in the NFL) make some half-points far more valuable than others.
Common mistakes
- Confusing covering the spread with winning the game — a team can win and not cover, or lose and cover.
- Ignoring key numbers when buying or selling points.
- Forgetting that a whole-number spread can push and tie up your stake.
FAQ
What does -110 mean on a spread?
You risk $110 to win $100. That extra $10 per $100 is the sportsbook's vig.
Can I buy points on a spread?
Yes — most books let you move the line in your favor for a higher price. Use the Half-Point Calculator to check whether the deal is fair.
What's the most common NFL spread?
-3 is the single most common spread, reflecting how often games are decided by a field goal.
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