If you want to come out on top against the bookies it is vital that you understand the fundamentals. When it comes to sports betting there is nothing quite as fundamental as the odds that the bookies offer. Unfortunately, betting odds can prove very confusing. That’s especially true for people who are new to betting.

1. Odds Meaning Betting Against
2. Odds Meaning In Soccer Betting
3. Spread Odds Meaning Sports Betting

As the name suggests, American odds are most popular in the United States. Working differently for favorites and underdogs, they're also known as 'moneyline' odds. American odds for betting on the favorite work by showing how much money you would have to bet in order to win $100. Things are different when betting on an underdog. The reason why you see -110 most often is because it represents the odds required by a sportsbook to guarantee a 10% commission as long as the betting public as a whole is wagering evenly on both teams.110 is also the most common odds you’ll see on most point spread lines and Over/Under lines.

That’s where this article comes in. We’re going to explain exactly how betting odds work, how they are set and the differences in the ways they are displayed. After taking in all the information below, you will be much better equipped to set about making some profit.

American Style Sports Betting Odds Most online sportsbooks will list their odds in what is called “American Odds”. There are a couple different versions of sports betting odds, but these American Odds are the most common odds used. The betting odds will grow progressively longer until you reach the rank outsider. Prop Bets Proposition bets relate to a specific event within a game, but these betting odds do not necessarily. May 13, 2020 Fixed odds: When a wager is placed, and a bookmaker accepts it, the line becomes fixed odds. If a bet is placed on Las Vegas at +3.5 odds and the line moves down to +3.0 prior to the game, players.

What Do Betting Odds Represent?

At their most basic, betting odds tell you two things:

1. How much you stand to make should the selection win
2. The probability of the selection winning

Take this example. If you were looking through the weekend Premier League fixtures and saw a team had fractional odds of 2/1 (that’s decimal odds of 3.0) you would know that you stand to win £2 in profit from every £1 that you stake should the team win. You’d also know that the bookmaker who set the odds ranks the team’s chances of winning as one in every three times the game is played.

If you saw a team had fractional odds of 8/13, you’d know that for every £13 you stake, you will win £8 or profit and that if the game was played 21 times in total, the bookies think the team would win 13 times and fail to win eight times (what is known as the implied probability).

Working out an implied probability percentage from fractional odds is simple. You just divide the stake by the combined sum of the two numbers which make up the fractional odds. In the case of 2/1 the equation looks like this:

1 / (2+1) = 0.33 or 33%

For odds of 8/13 this is the equation:

13 / (8+13) = 0.62 or 62%

That’s how the maths works but when it comes to the actual odds that bookmakers set, it’s a little more complicated.

How Do Bookmakers Set Their Odds?

The basic business model of a sportsbook is fairly uncomplicated. Bookmakers set the odds and take bets on an event. When that event ends they pay out everyone who backed the winner and then keep the rest for themselves.

But, consider the following horse race.

As you can see, the combined implied probability of the selections above is 100%. From a bookmaker’s perspective that is a big problem. That’s because, presuming they’ve got the same amount of liability on each selection, they’d never make any money as they’d have to collect and payout the same amount.

So, the bookmakers will build something called an overround into their odds. Here’s a real example of a match odds market from a football match:

With an total implied probability of 101.7%, the bookmaker who set those odds is guaranteed to make a profit of 1.7% assuming that they have the same amount of liability on all three selections. Of course, it rarely works out that the bookies manage to spread their liability evenly but you need to know that when you look at a betting market you’re not simply looking at a reflection of how the bookies think the event will pan out. There’s much more going on behind the scenes.

Armed with this knowledge of how the bookmakers set their odds, you can concentrate on finding value. That is, finding a bet where you believe the odds (and therefore the implied probability) is too big. If the bookies think that a side has a 50% chance of winning but you think they’ve got a better chance than that, that’s value.

The Difference Between Decimal and Fractional Odds

You will have seen above that we’ve spoken about both fractional and decimal odds. They are just different ways of conveying the same information but they do add another layer of complexity.

All the major online bookmakers will shows their odds as both fractions and decimals so it’s important that you understand just what they are showing and how to switch between the two. Thankfully, it only requires simple maths.

To go from a fraction to a decimal is as easy as dividing out the fraction and adding one. Here’s how that looks for odds of 2/1:

(2/1) + 1 = 3.o

And using our second example from above, 8/13, it looks like this:

(8/13) + 1 = 1.62

If you want to go from decimal odds to fractional odds is similarly simple. You just minus one from the decimal odds, turn that number into a fraction and reduce it down to it’s simplest form.

Let’s take decimal odds of 4.5, this is the equation:

4.5 – 1 = 3.5
35/10 -> 7/2

If the decimal price is 1.25, you convert it into fractional odds like this:

1.25 – 1 = 0.25
25/100 -> 1/4

Here’s a list of some of the most common fractional odds and their decimal equivalents (for a more in-depth list click here).

Key Terminology

When reading betting advice or searching for a value bet on the bookies’ websites you’ll come across some key terms relating to betting odds. To round up our article on betting odds, we’ve covered the most widely used terms to ensure you don’t get confused in your search for winners.

Stake – The amount of money that you place (or wager) on a specific bet.

Price – The price of a bet is simply another way of referring to the odds. You can either say that a football team can be backed at odds of 2/1or that their price is 2/1.

Odds On & Odds Against – Two of the key terms that you’ll hear when it comes to betting odds are ‘odds on’ and ‘odds against’. These terms refer to whether a price is greater or lower than evens. Any price above evens is known as odds against, while anything below evens is odds on.

Short and Long Odds – If something is described as being short odds it means the price is low. A long odds shot will provide you with a bigger win but is much less likely to win.

Action: Having a wager on a game.

ATS ('against the [point] spread'): If a team is 5-2 ATS, it means it has a 5-2 record against the point spread, or more commonly referred to simply as the 'spread.'

Backdoor cover: When a team scores points at the end of a game to cover the spread unexpectedly.

Bad beat: Losing a bet you should have won. It's especially used when the betting result is decided late in the game to change the side that covers the spread. Also used in poker, such as when a player way ahead in the expected win percentage loses on the river (last card).

Beard: Someone who places a wager for another person (aka 'runner').

Book: Short for sportsbook or bookmaker; person or establishment that takes bets from customers.

Odds Meaning Betting Against

Bookie: A person who accepts bets illegally and charges vig.

Buying points: Some bookies or sportsbooks will allow customers to alter the set line and then adjust odds. For example, a bettor might decide he wants to have his team as a 3-point underdog instead of the set line of 2.5. He has then 'bought' half a point, and the odds of his bet will be changed.

Chalk: The favorite in the game. People said to be 'chalk' bettors typically bet the favorite.

Circle game: A game for which the betting limits are lowered, usually because of injuries and/or weather.

Closing line: The final line before the game or event begins.

Consensus pick: Derived from data accumulated from a variety of sportsbooks in PickCenter. The pick, and its percentage, provides insight as to what side the public is taking in a game.

Cover: The betting result on a point-spread wager. For a favorite to cover, it has to win by more than the spread; an underdog covers by winning outright or losing by less than the spread.

Dime: Jargon for a $1,000 bet. If you bet 'three dimes,' that means a $3,000 wager.

'Dog: Short for underdog.

Dollar: Jargon for a $100 bet. Usually used with bookies; if you bet 'five dollars,' that means a $500 wager.

Edge: An advantage. Sports bettors might feel they have an edge on a book if they think its lines aren't accurate.

Even money: Odds that are considered 50-50. You put up $1 to win $1.

Exotic: Any wager other than a straight bet or parlay; can also be called a 'prop' or 'proposition wager.'

Favorite: The expected straight-up winner in a game or event. Depending on the sport, the favorite will lay either odds or points. For example, in a football game, if a team is a 2.5-point favorite, it will have to win by three points or more to be an ATS winner.

Fixed: A participant in a particular game who alters the result of that game or match to a completely or partially predetermined result. The participant did not play honestly or fairly because of an undue outside influence.

Futures bet: A long-term wager that typically relates to a team's season-long success. Common futures bets include betting a team to win a championship at the outset of a season, or betting whether the team will win or lose more games than a set line at the start of the season.

Halftime bet: A bet made after the first half ended and before the second half begins (football and basketball primarily). The oddsmaker generally starts with half of the game side/total and adjusts based on what happened in the first half.

Handicapper: A person trying to predict the winners of an event.

Handle: The amount of money taken by a book on an event or the total amount of money wagered.

Hedging: Betting the opposing side of your original bet, to either ensure some profit or minimize potential loss. This is typically done with futures bets, but can also be done on individual games with halftime bets or in-game wagering.

High roller: A high-stakes gambler.

Hook: A half-point. If a team is a 7.5-point favorite, it is said to be 'laying seven and a hook.'

In-game wagering: A service offered by books in which bettors can place multiple bets in real time, as the game is occurring.

Juice: The commission the bookie or bookmaker takes. Standard is 10 percent. Also called the 'vig/vigorish.'

Layoff: Money bet by a sportsbook with another sportsbook or bookmaker to reduce that book's liability.

Limit: The maximum bet taken by a book. If a book has a $10,000 limit, it'll take that bet but the book will then decide whether it's going to adjust the line before the bettor can bet again.

Lock: A guaranteed win in the eyes of the person who made the wager.

Middle: When a line moves, a bettor can try to 'middle' a wager and win both sides with minimal risk. Suppose a bettor bets one team as a 2.5-point favorite, then the line moves to 3.5 points. She can then bet the opposite team at 3.5 and hope the favorite wins by three points. She would then win both sides of the bet.

Money line (noun), money-line (modifier): A bet in which your team only needs to win. The point spread is replaced by odds.

Mush: A bettor or gambler who is considered to be bad luck.

Nickel: Jargon for a $500 bet. Usually used with bookies; if you bet 'a nickel,' that means a $500 wager.

Oddsmaker (also linemaker): The person who sets the odds. Some people use it synonymous with 'bookmaker' and often the same person will perform the role at a given book, but it can be separate if the oddsmaker is just setting the lines for the people who will eventually book the bets.

Off the board: When a book or bookie has taken a bet down and is no longer accepting action or wagers on the game. This can happen if there is a late injury or some uncertainty regarding who will be participating.

Over/under: A term that can be used to describe the total combined points in a game (the Ravens-Steelers over/under is 40 points) or the number of games a team will win in a season (the Broncos' over/under win total is 11.5). Also used in prop bets.

Parlay: A wager in which multiple teams are bet, either against the spread or on the money line. For the wager to win (or pay out), all of them must cover/win. The more teams you bet, the greater the odds.

Pick 'em: A game with no favorite or underdog. The point spread is zero, and the winner of the game is also the spread winner.

Point spread (or just 'spread'): The number of points by which the supposed better team is favored over the underdog.

Proposition (or prop) bet: A special or exotic wager that's not normally on the betting board, such as which team will score first or how many yards a player will gain. Sometimes called a 'game within a game.' These are especially popular on major events, with the Super Bowl being the ultimate prop betting event.

Push: When a result lands on the betting number and all wagers are refunded. For example, a 3-point favorite wins by exactly three points. Return on investment (ROI): In PickCenter, ROI is the amount (according to numberFire) that a bettor should expect to get back on a spread pick.

Runner: Someone who makes bets for another person (aka 'beard').

Sharp: A professional, sophisticated sports bettor.

Spread: Short for point spread.

Square: A casual gambler. Someone who typically isn't using sophisticated reasoning to make a wager.

Steam: When a line is moving unusually fast. It can be a result of a group or syndicate of bettors all getting their bets in at the same time. It can also occur when a respected handicapper gives a bet his followers all jump on, or based on people reacting to news such as an injury or weather conditions.

Straight up: The expected outright winner of the money line in an event or game, not contingent on the point spread.

Teaser: Betting multiple teams and adjusting the point spread in all the games in the bettor's favor. All games have to be picked correctly to win the wager.

Total: The perceived expected point, run or goal total in a game. For example, in a football game, if the total is 41 points, bettors can bet 'over' or 'under' on that perceived total.

Tout (service): a person (or group of people) who either sells or gives away picks on games or events.

Underdog: The team that is expected to lose straight up. You can either bet that the team will lose by less than the predicted amount (ATS), or get better than even-money odds that it will win the game outright. For example, if a team is a 2-1 underdog, you can bet $100 that the team will win. If it wins, you win $200 plus receive your original $100 wager back.

Odds Meaning In Soccer Betting

Vig/vigorish: The commission the bookie or bookmaker takes; also called the 'juice.' Standard is 10 percent.

Wager: A bet.

Welch: To not pay off a losing bet.

Spread Odds Meaning Sports Betting

Wiseguy: A professional bettor. Another term for a 'sharp.'