A spread bets on the margin, not the winner.
When one side is far stronger than the other, a book gives the underdog a head start so both sides can be priced close to even. That head start is the point spread, and it turns every mismatch back into something like a coin flip. This page covers how to read one, what covering means, why the number three matters so much in football, and how baseball handles the same idea differently.
What a point spread is
A point spread, also called a handicap, is a number added to the underdog's final score and subtracted from the favorite's. Once the adjustment is applied, whichever side is ahead has covered. The purpose is to make a lopsided game bettable on both sides at a similar price, which is why the spread exists at all.
Say a team is listed at -6.5 and its opponent at +6.5. The favorite covers by winning by seven or more. The underdog covers by losing by six or fewer, or by winning outright. Notice that the underdog has two ways to cash and the favorite has one, and that is exactly what the price is compensating for.
Half points exist to remove ties. On a whole number spread, a margin landing exactly on the number is a push: the stake comes back and nothing is won or lost.
Why -110 shows up on both sides
A spread is chosen to split the game near the middle, so the two sides start close to a coin flip. The sportsbook then charges its margin by pricing each side at -110 rather than even money. Risking 110 to win 100 means you need to be right 52.38 percent of the time simply to break even, and that 2.38 point gap over a coin flip is the whole business model.
The number and the price move together. If a book wants to nudge a market without changing the spread itself, it shifts the juice instead, so -110 becomes -115 and then -120 on one side. That is a real move even though the spread on the screen never changed, which is why a movement board has to watch the price as closely as the number. There is more on that in what is line movement.
Why three is worth more than eight
Football scores in threes and sevens, so final margins pile up on a handful of values. A margin of exactly three is by far the most common result in the NFL, with seven next. That distribution has a practical consequence: moving a spread from -3.5 to -2.5 crosses the single most crowded number on the board, while moving from -8.5 to -7.5 crosses one that occurs far less often.
This is why buying a half point costs different amounts in different places. A book will charge heavily to take you from -3 to -2.5 and comparatively little to take you from -8 to -7.5, and it is charging in proportion to how much probability the half point actually hands you. Basketball has a much flatter distribution of margins, so key numbers matter far less in the NBA than they do in the NFL.
The run line is a spread with a fixed number
Baseball uses the same idea with one important difference. Instead of moving the number to fit the matchup, books hold it at 1.5 runs and move the price. A dominant team might be -250 on the moneyline and near even money at -1.5, because winning is likely but winning by two or more is a genuinely different proposition in a low scoring sport.
That fixed number also creates a quirk worth knowing about. Run line quotes occasionally flip sides between two pulls, so the opening price and the current price stop describing the same wager. Charting them as one continuous line produces a move that never happened, which is why a careful board flags a flip rather than drawing it.
Point spreads, answered
What is a point spread?
A point spread is a handicap that a sportsbook applies to the favorite so that both sides of a game can be offered at a similar price. The favorite has to win by more than the spread for its backers to be paid, and the underdog can lose by less than the spread and still cash.
What does covering the spread mean?
Covering means beating the handicap, not just winning the game. A team laying 6.5 points that wins by three has won the game and failed to cover, and its opponent has lost the game and covered. This is why spread results and game results often disagree.
What does a minus and plus mean on a spread?
A minus number in front of the spread marks the favorite and is subtracted from its final score, so -6.5 means the team must win by seven or more. A plus number marks the underdog and is added to its final score, so +6.5 means the team can lose by six or fewer and still cover.
What is a push on a spread?
A push happens when the margin lands exactly on a whole number spread, such as a three point favorite winning by three. Nobody wins, the stake is returned, and the leg is removed from a parlay rather than losing it.
Why are most spreads priced at -110?
The spread is set so both sides are close to a coin flip, then the sportsbook charges a margin on each side. Standard pricing is -110 on both, which means risking 110 to win 100 and needing 52.38 percent of those wagers to break even rather than 50 percent.
What are key numbers in football betting?
Key numbers are the margins that occur far more often than their neighbors because of how a sport scores. In football, three and seven dominate, since games are decided by field goals and touchdowns. Moving a spread across three is a much larger change than moving it from eight to nine.
What is buying a half point?
Buying a half point moves the spread in your favor, and the sportsbook charges for it by worsening the price. Moving from -3 to -2.5 typically costs far more than moving from -8 to -7.5, because the half point you are buying at three removes a genuinely common result rather than a rare one.
Is a run line the same thing as a point spread?
It is the baseball version, with one difference. Football and basketball spreads move to fit each matchup, while a run line is almost always fixed at 1.5 runs and the price does the adjusting instead. A heavy MLB favorite at -1.5 can still be priced near even money because winning by two or more is far from certain.
Find the best number on the board
Half a point and ten cents of juice decide more tickets than most people expect. The odds board shows the spread and the price at every book we track, side by side.