__If you place wagers on US sports, then chances are high that you've heard of point spreads. Here's how they work; if a game has Patriots -9.0 and Vikings +9.0, the Patriots are 9.0 point favorites and the Vikings are 9.0 point underdogs. Unless otherwise stated, no matter which team you bet on, you'll be required to risk $1.10 for each $1.00 you want to win. For Patriots bettors to prevail, they need their team to win by 10 or more points. A 9-point Patriot victory would be a push (a tie). For Vikings bettors to take home the victory, they need to either win the game or lose by less than 9 points.__

`For example: New England –2.5 (–110) or Philadelphia +2.5 (–110) means you’d wager $110 for the chance to win an additional $100 if you bet on the point spread. Depending on which side is receiving the most action, a sportsbook will often move the line up or down in order to incentivize betting on the less popular side. Injuries or unforeseen changes can also impact a point spread gambling line. Point spreads are often listed with a half-point (ex: 2.5) in order to prevent the final margin from landing exactly on the point spread (ex: 10-point spread, final score of 20–10). A “push” or “tie” usually goes to the house or sportsbook, unless another arrangement has been agreed upon beforehand.`

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Point spreads are determined by football 'experts' to even the playing field between two teams. Normally one team will be favored to win over another team. These 'experts' determine the number of points that one team will beat another team by. For example, Chicago is favored to beat Minnesota by 10 points. On the web site it will appear like the following:

__In this example the Jets are listed as four-point favorites (-4) over the Bills and the 49ers are three-point underdogs (+3) against the Seahawks. So, if you bet $110 on the favored Jets, they must defeat the Bills by more than four points in order to win $100. If you bet $110 on the underdog 49ers you will win $100 if they win outright or lose by less than the three-point spread. If the final score happens to end up exactly on the number it's a tie, or 'push,' and you get your money back.__

`The first thing you’ll notice with moneyline odds is that there is either a positive or negative sign in front of the number. What that sign denotes is how much you’ll win betting on each side. If there’s a positive sign next to the odds, that indicates the amount of money you would win if you bet $100. If the odds on a tennis player said +150, that means that for a $100 bet, you would win $150. Now if there is a minus sign in front of the odds, that is the number that you would have to bet in order to win $100. For example, if a football team was -250, that means you’d have to bet $250 to win $100.`

If bettors were quick to jump on the Atlanta line at +4.5 when it first came out, they would have a distinct advantage over those who waited closer to kick off and were stuck with +2.5. The opposite holds true for Carolina. Bettors that were quick to pull the trigger are now laying two more points than they would if they were patient and saw the line movement before making their move.

**Technically, probability should always be a number between 0 and 1. It's often expressed as a percentage though, which makes things easier for the purposes of betting. 0.7059 converted into a percentage (i.e. multiplied by 100) gives us 70.59%. What this means is that the odds suggest the Celtics have a 70.59% chance of winning. If we believe the Celtics have an even greater chance of winning, then we should back them at odds of -240.**

As we mentioned in the close of the last section, sportsbooks try their best to get the same amount of total money bet on both sides of a game. If they can accomplish this, then they are guaranteed to make a profit no matter who wins or loses the game. The way a sportsbook goes about doing this is by manipulating the point spread to make the less bet side more enticing.

If you have stumbled upon this page, chances are you are hoping to learn the definition of a point spread when it comes to sports gambling, specifically basketball gambling. Or maybe you already know what a point spread is, but you are hoping to learn as much as you can before you put some money down on a specific team or game. Whatever the case, you have certainly come to the right place! Keep reading to learn everything you could have ever hoped to know regarding a point spread in sports gambling.

*You may be wondering how we determined which of the two teams was the favorite and which was the underdog. You may also be wondering how much you get paid out for a bet on either side of this game. If you look at the odds above (this is a screenshot from an actual online sportsbook), you’ll see that all of that information is given to you. Before the spread number of 4 ½, you’ll see a plus or minus sign. The plus sign indicates the underdog and the minus sign indicates the favorite.*

We mentioned we would touch on the -3500 bet in this section. If you calculate the implied probability of -3500, you see that it is 97.2%. This means that the bet will have to hit 97.2% of the time for you to break even. Now, if you think that the bet is actually 100%, then it might be a smart bet to make. You’re still going to have to put up a lot of money to see any real sort of profit, which might not be desirable based on your personal preferences.

_{Technically, probability should always be a number between 0 and 1. It's often expressed as a percentage though, which makes things easier for the purposes of betting. 0.7059 converted into a percentage (i.e. multiplied by 100) gives us 70.59%. What this means is that the odds suggest the Celtics have a 70.59% chance of winning. If we believe the Celtics have an even greater chance of winning, then we should back them at odds of -240. }

Absolutely. When the lines go up for the NFL, or for the first game of the NCAA men’s basketball tournament, there are several days in between the open and the game itself where movement can take place. You’ll find that the betting public tends to pile in on their favorite teams once they get home from work on Friday. You can anticipate these line movements and time your bet accordingly to take advantage.

*The money line bet is the simplest form of betting in the industry. A “money line” bet is a way of betting on which team is going to win the game outright, or which individual will win an event. With a money line bet, the margin of victory or the total number of points a team scores do not matter. If you like the Patriots to win outright versus the Browns, a 3-0 win would win you just as much money as a 77-0 win.*

__In most football games there is a favorite and an underdog. Very occasionally there are games where the two team are completely evenly matched, but for the most part one team is favored over the other to win. With point spreads, the idea is to create an even money proposition when betting on the game. So the favorite has to win by at least a certain number of points for a wager on them to be successful, and the underdog has to lose by no more than a certain number of points for a wager on them to be successful. The bigger the gap in quality between the two teams, the bigger the point spread.__

Easily the most popular type of betting for NFL football is “spread” betting or more commonly known as betting against the spread. Bettors who are new to NFL betting or betting in general may be a little confused with NFL spread betting, but it is pretty easy to understand once it is explained to you. We will explain what betting against the spread means below.

**You could even take it a step further and take the next rectangle down and bet Liverpool +1. This means that Liverpool can tie or win by any amount of goals and you win your bet. As Liverpool is a huge favorite, you won't be paid very well at all for this bet, but you can still turn a profit when you are right. You would be paid at 1 to 10 which means you would get $1 for every $10 you bet. If you bet $100, you would get a $10 profit on this bet.**

##### Bookmaker's interest - In order to guarantee a profit for the house, a bookie needs to create even action on both sides of a particular game. In a perfect world the bookie would have 50 percent of the handle come in on the underdog and 50 percent on the favorite. This ensures that the sports books are guaranteed a profit because of the 10 percent commission or "vigorish" charged on most sports wagers. This is why there is "movement" on the point spread. If one side on a game is being bet more heavily, the bookie must move the number in order to attract interest on the other side in order to balance action.

The point spread is basically used to create a 50/50 betting proposition. In this example, the Celtics are theoretically just as likely to win by six points or more as the Grizzlies are to lose by less than six points. This is reflected in the odds, which are typically -110 on both sides of the wager. You have to risk $110 for the chance of winning $100.

_{If you bet $100 on the Magic, you would get $105 in return. If you bet $100 on the Mavericks, you would get $90.91 in return. You might be asking yourself why they aren’t paying out the same amount on both sides of the game. The reason is that the difference is the house rake. Sometimes referred to as the vig or the juice, this is the small percentage that the sportsbook takes off the top for facilitating the action. The percentage that the house takes will vary, and different sides of the bet will pay for it. }