Understanding Point Spreads — How Spread Betting Works
Everything you need to know about point spread betting. Learn how spreads are set, why they move, and how to read the numbers for NFL, NBA, and college sports.
What Is a Point Spread?
A point spread is the number of points by which a sportsbook expects the favorite to win. The favorite is assigned a negative spread (e.g., -7) and the underdog a positive spread (+7). When you bet the spread, you're wagering on the margin of victory, not just who wins the game.
For example, if the Lakers are -5.5 against the Celtics, a bet on the Lakers wins only if they win by 6 or more. A bet on the Celtics +5.5 wins if Boston loses by 5 or fewer points, or wins the game outright. The half-point ensures there's no push (tie).
Why Do Spreads Move?
Point spreads are not static — they move based on betting action, injury news, weather, and other factors. If heavy money comes in on the favorite, the book may move the spread from -5.5 to -6 or -6.5 to balance the action.
This is why comparing spreads across multiple sportsbooks is critical. If one book has a team at -5 and another at -6, buying at -5 gives you a full point of value. Over a season, these small edge differences add up significantly. Oddstatus shows you real-time spread comparisons so you always know where the best number is.
Key Numbers in Spread Betting
Not all point differences are equal. In the NFL, key numbers are 3, 7, and 10 because these margins occur most often due to the scoring structure (field goals = 3, touchdowns = 7). Getting a spread of +3.5 instead of +3 is extremely valuable because so many games are decided by exactly 3 points.
In the NBA, key numbers are 5, 7, and 10. In college sports, the key numbers are the same but with higher variance, making line shopping even more important.
Point Spread FAQ
What happens if the spread is exactly the margin of victory?
This is called a push. Your bet is refunded. For example, if the spread is -7 and the favorite wins by exactly 7, both sides push. Spreads with half-points (e.g., -7.5) can never push.
What does -110 mean next to a spread?
-110 is the standard vig (juice). It means you must risk $110 to win $100. The book's commission is built into this price. Some books offer reduced juice like -105, which saves bettors money over time.
Is it better to bet the spread or the moneyline?
It depends on the situation. Spreads offer better value on heavy favorites (since moneylines on -300 favorites require large risk for small return). Moneylines are better on underdogs you believe can win outright.