Point Spread Betting Guide: How to Read and Bet the Spread
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The point spread is the most popular bet in American sports because it levels the field. Instead of just picking a winner, you bet on the margin: the favourite must win by more than the spread, and the underdog can lose by less than it — or win outright — and still cover.
This guide explains how to read a spread, why most spreads are priced around -110, what the hook is, and how to find the extra half-points that decide so many bets.
What a point spread is
A point spread is a margin the favourite must beat for a bet on them to win. A -6.5 favourite must win by 7 or more. The underdog at +6.5 covers if they lose by 6 or fewer, or win the game outright.
The favourite is the minus number, the underdog the plus. The half-point — the hook — exists to prevent ties, so there is always a clear winner and loser on the bet.
How spread odds work
Most spreads are priced near -110 on both sides. That -110 is the vig: you risk $110 to win $100. The book takes roughly equal money on each side and keeps the difference as its margin.
Books move the spread and the price in response to betting. If everyone backs the favourite -6.5, the book may push it to -7 or shift the price to -115 to rebalance. The number you take matters as much as the side you pick.
Convert -110 to an implied probability and you get about 52.4% per side, summing to 104.8% — the hold. Finding -105 instead of -110 shrinks that margin and is worth chasing.
Example bet walkthrough
You bet the Eagles -6.5 against the Cowboys at -110, staking $110 to win $100. The Eagles win 27–20, a 7-point margin, so they cover the 6.5 and your bet pays $100 profit plus your $110 stake back.
Had the Eagles won 24–20 — a 4-point margin — they win the game but fail to cover, and the spread bet loses. That gap between winning and covering is the whole point of the spread.
Now suppose another book offered Eagles -6 at -110. The half-point would have turned a 6-point win into a push, refunding your stake, instead of a loss. Half-points are why line shopping on spreads pays off.
Point spread strategy tips
Spread betting rewards discipline around the number:
- Shop for the best half-point. Getting +7 instead of +6.5 on a dog, or -6.5 instead of -7 on a favourite, flips a meaningful share of bets.
- Respect key numbers. In the NFL, margins of 3 and 7 are the most common, so moving across those numbers is far more valuable than a half-point elsewhere.
- Buy points only when they cross a key number. Paying extra juice to move from +2.5 to +3 in the NFL can be worth it; moving from +8 to +8.5 rarely is.
- Bet early or late deliberately. Early lines are softer; closing lines are sharper. Know which edge you are chasing.
- Track your closing line value — beating the closing spread consistently is the best sign you are betting well.
Best sportsbooks for spread betting
For spreads, you want competitive juice and frequent alternate lines:
- DraftKings — reliable -110 pricing, deep alternate-spread menus, and quick reactions to line moves.
- FanDuel — strong key-number pricing and easy point-buying, useful for NFL and NBA spreads.
- Caesars — often the best place to find reduced juice at -105 on marquee spreads, which lowers your long-run cost.
Common spread mistakes
Spread bettors leak value in two predictable ways:
- Ignoring the half-point. Taking -7 when -6.5 is available a click away costs you every game decided by exactly 7.
- Overpaying juice. Habitually betting -120 spreads instead of shopping for -110 or -105 erodes a bankroll faster than a few bad picks.
- Buying points away from key numbers, where the extra juice almost never pays for itself.
Frequently asked questions
- What does the half-point or hook mean in a spread?
- The half-point prevents a tie. A spread of -6.5 means there is no way to land exactly on the number, so every bet is a clear win or loss rather than a push.
- What does -110 mean on a spread bet?
- It is the price, or vig. You risk $110 to win $100. Most spreads sit near -110 on both sides, which builds the book’s margin into the bet.
- Should I buy points on a spread?
- Only when it moves you across a key number, such as 3 or 7 in the NFL. Buying points elsewhere usually costs more in juice than the extra half-point is worth.
- What are key numbers in spread betting?
- Key numbers are the most common margins of victory — 3 and 7 in the NFL above all. Getting your spread on the right side of a key number is the most valuable line-shopping edge there is.
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Educational content for informational purposes only. Not betting or financial advice. Please gamble responsibly. 21+ where applicable.