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.
Point spreads focus on a margin of victory between the two teams and again, what you’re looking for is the positive and negative signs. If there is a minus sign next to a team’s spread, that suggest that they are favored and have to win by or cover that amount. If there is a positive sign, that tells you that they are the underdog and they are getting points. For example: let’s say that the New England Patriots are playing the Buffalo Bills and the Patriots are -5.5 and the Bills are therefore +5.5. If you bet the Patriots, they have to win by six points or more to cover. If you bet the Bills, they can lose by five points or less, or they can win the game outright and you would still win your bet.

There are some major differences between the two that all punters should be aware of. One of the great things about betting online is the offering of betting tutorials. With these, the newest punters can learn all about the different types of bets, how to place them and what odds they carry for winning. For those that are looking to enjoy amazing betting options and superb odds, there are many trusted and respected online casinos in canada that offer sportsbook action and awesome chances to collect payouts.


A Parlay is a wager which combines several legs in a wager where the winnings from each selection roll onto the next. For a Parlay to be successful, all individual legs in the Parlay need to be winning selections. In the event of a tie in one of your selections in a parlay, the parlay is reduced to the next lowest number of teams. For example, if you have a 4 team parlay and one of the selections is a tie (only on 2 way markets), the leg would be considered a "push". In this instance, the 4 team parlay would then become a 3 team parlay and would be settled at reduced odds to reflect a winning 3 team parlay.

If you want to predict what will happen when Team A meets Team B, your best stats to analyze are those generated in their most recent head-to-head matchups at the same venue. The habits of the betting public are fairly constant, so ATS results in general have a longer shelf life, but don’t bother going too far back in time. The 2009 New York Yankees are going to look a lot different than the 2008 Yankees or the 2000 Yankees. (Source: The Sports Bookie Blog)
In the brackets after the last two games, you will see the odds associated with each of the bets. Let's say we made our earlier example bet of the Chargers -3 and the final score of the game was Chargers 21, Cowboys 14. Looking at this, we already know that we won our bet, but just how much money are we going to get paid? For this bet, we will get paid even money because that is what is posted in the parenthesis. This means that if we bet $100, we will profit $100 for winning our bet.
The spread on offer will refer to the betting firm’s prediction on the range of a final outcome for a particular occurrence in a sports event e.g. the total number of goals to be scored in a football match, the number of runs to be scored by a team in a cricket match or the number of lengths between the winner and second-placed finisher in a horse race.
The most important takeaway is the actual pointspread, which is seven points in this example. The plus sign is always in front of the spread for the underdog and the minus sign is used to signify the favorite. Next to the pointspread in this example is (-110). This number reflects the actual commission (or juice) that the sportsbook is charging to book this bet. If you wager $100 on New England as the favorite and the Patriots go on to win my more than seven points, you would win $100. If they won by fewer than seven points or lost the game outright, you would owe this betting outlet $110. If New England wins by exactly seven points, the bet is considered to be a PUSH and no money exchanges hands. You only pay the 10 percent commission on losing bets.
Have you ever heard of moneyline betting? It's an American term that's traditionally associated with betting on the major US sports. These wagers are available in other parts of the world too, but they're typically referred to as win bets. The same principle applies though. When you correctly select which team will win a match, you'll get paid out at the relevant odds.
As an illustration, let's look at Super Bowl futures. Sports books list each NFL team with corresponding odds to win the Super Bowl. For example, the Ravens may be 5-1, the Redskins 12-1, the Cardinals 100-1, etc. If you place $10 on the Redskins and they go on to win the Super Bowl, you collect $120 plus your $10 back for a total payoff of $130. It does not matter whether your team covers the point spread in the Super Bowl. For the purposes of future book betting, the team has to win only the Super Bowl.
We do want to make sure to point out that this is total money returned and not your profit. We went over the difference above when discussing the American odds. Let’s take a look at the same bet again, but this time with decimal odds. We should be expecting to see a profit of $33.33 for an Eagles bet and $240 for a Falcons bet since we know that the bets are the exact same and are just presented in a different format.
The favorite team or player on the moneyline is the team that’s expected to win. This side of the bet usually listed with a minus (-) sign. The underdog team or player on the moneyline is the team that’s expected to lose. This side of the moneyline is usually listed with a plus (+) sign. These signs signify how either side of the wager will pay. The minus side will pay less than original wager while the plus side will pay more than the original wager.
To help get you started, we’ve broken down the most popular and the need to know NBA bet types below. Make sure you take the time to read through each of these and figure out how they might play a role in your betting strategy. Remember, you are not required to use all of these bets. Many professional NBA sports bettors will only use one or two bet types and still crush the books. They prefer to keep things simple and work with what works for them. We suggest you do the same.
Handicap league bets are quite similar to the bets we've already talked about except you are now betting on a team's performance across the entire course of the season. Bets are made at the beginning of the season before the first game is played and are not paid out until the last game of the season has been played. Here is a screenshot of some handicap league bets on Premier League soccer.
If you want to predict what will happen when Team A meets Team B, your best stats to analyze are those generated in their most recent head-to-head matchups at the same venue. The habits of the betting public are fairly constant, so ATS results in general have a longer shelf life, but don’t bother going too far back in time. The 2009 New York Yankees are going to look a lot different than the 2008 Yankees or the 2000 Yankees. (Source: The Sports Bookie Blog)
In addition to the spread bet, a very common "side bet" on an event is the total (commonly called the over/under or O/U) bet. This is a bet on the total number of points scored by both teams. Suppose team A is playing team B and the total is set at 44.5 points. If the final score is team A 24, team B 17, the total is 41 and bettors who took the under will win. If the final score is team A 30, team B 31, the total is 61 and bettors who took the over will win. The total is popular because it allows gamblers to bet on their overall perception of the game (e.g., a high-scoring offensive show or a defensive battle) without needing to pick the actual winner.
Hopefully, by now you are an absolute expert on point spread and handicap bet types. If you're still confused on anything, take your time and reread through the examples we posted and it should slowly become clearer to you. Sometimes the math can be a bit confusing to people, so take your time. If you are ever confused with a bet, you are making online or at a casino, just ask support of the agent for help to clarify. They will be more than happy to assist you in making sure you've bet on exactly what it is that you want to bet on. Don't worry, no one will laugh at you or give you a hard time because you are confused. We all were new to this one day, and they are specifically paid to help new bettors like you understand everything and have a much better betting experience.
If you like favorites, you're going to be betting a lot to win a little. The money line will always be listed to the right of the point spread on the odds board in a sports book. In the above example, the money line would probably be Chicago -250 and Detroit +200. To bet Chicago simply to win, you must wager $250 to win $100, while a $100 bet on Detroit would pay $200 if the Lions come through.
There is no magic formula for moneyline betting, you’ll simply need to pick your spots wisely and balance your risk versus your potential reward. In general, I think this means taking higher upside picks, such as underdogs rather than taking large favorites. However, bettors should analyze each game independently looking for value in both favorite and underdog moneylines.

For example, let’s say that two players are playing a tennis match and one player is +250. You think that this player has a MUCH better chance than that but still is an underdog. Most people would tell you that you are crazy to make a bet on someone that you think is going to lose. The thing is, though, underdogs do win and if you’re getting paid more than you should when they do, you’re going to be profitable. Here’s a simple math breakdown.


Let’s start with the basics: what do sports bettors mean when they talk about a ‘line?’ The word line, in the language of a sportsbook, can refer to either the odds and/or a point spread in any sports contest. Let’s take a look at an imaginary line the way you’d read it off the board sitting in a Vegas sports betting lounge or on the screen at your online book. Let’s imagine a game between the New York Giants and the Dallas Cowboys. Your book’s NFL betting line might look something like this:
Say the Bears are a six-point favorite over the Lions and the total is 42. To bet the Bears, you must "lay the points," meaning they must win by seven or more to cover and give you the win. Betting the underdog Lions, you are "taking" six points, and they can lose by five or fewer, or win the game outright, and you have a winning bet. If the Bears win by exactly six, both sides "push" and all bets are returned. It's also a push if the final score equals 42, otherwise the over or under will win.

Let’s start with the basics: what do sports bettors mean when they talk about a ‘line?’ The word line, in the language of a sportsbook, can refer to either the odds and/or a point spread in any sports contest. Let’s take a look at an imaginary line the way you’d read it off the board sitting in a Vegas sports betting lounge or on the screen at your online book. Let’s imagine a game between the New York Giants and the Dallas Cowboys. Your book’s NFL betting line might look something like this:
Buying points: Changing the point spread in order to favor your chances of winning. The odds here are proportionally lowered. Buying points allows the option of moving the point-spread on totals in your favor when betting on football or basketball (college and pro). You’re able to move the line up to 2 points. For every ½ point you want to buy, you must risk 10% (10 cents) in extra juice (except when buying on/off of a 3 in NFL).

When betting on American sports such as NBA or NFL, there are usually two main categories that appeal to punters. These are the point-spread or the moneyline. With spread betting there is a 50% chance to win on either side since the spread is actually a handicap that is given to the underdog to even out the chances for both teams on a game or a match. The majority of the time, punters will win just about the amount they bet on a point spread. Moneyline bets can be a bit more complicated and there is no point spread involved. In fact, it is a simple bet to place as one will simply be choosing who will win the game.


This is because different bookmakers and betting sites price up games differently. So the odds they offer are not always the same. Remember the Packers versus Cardinals game we showed earlier as an example? We used the actual odds from a real betting site for that example. The following odds were also available for the same game, from various other sites.
Moneyline bets will move the line based on the amount of money coming in on each side of the bet. It has nothing to do with who the sportsbook really thinks is going to win the game and everything to do with that delicate dance of getting the right money on both sides. For example, let’s say that the line for the Magic and Mavericks game is the following:
For each NFL game the oddsmakers set a number of points in which the favored team is favored by. Bettors can then either choose for the favored team to win by more than the number of points set, or bet on the underdogs to lose by less than the number of points they are underdogs by or win the game straight up. For example, the spread could be set on the favored team at 6.5 points. This would mean in order for a bet on the favored team on the spread to win they would need to win by more than 6.5 points (7 or more) in order to win the bet. It also means that a bet on the underdog team would win if the underdogs lost by less than 6.5 points (6 or less) or won the game outright.

A point spread - Lets take, for a hypothetical situation on one of the types of football bets (using the point spread), that the Kansas City Chiefs were visiting the Detroit Lions and Detroit was established as a six-point favorite at game time, which is commonly written as Detroit -6. Kansas City would be the underdog and displayed as Kansas City +6. If you bet the favorite, Detroit has to win by more than six points to win your bet. Remember, the Lions are favored by six points, so we subtract six points from their final score on a spread bet. If Detroit were to win 27-20, Lions bettors would win their wager. If the Chiefs were to win the game by any score and you picked the Chiefs you would win not including the extra six points. If the Lions were to win, 20-14, it would be exactly six and a push, so you would get your money back.


Moneyline bets can be presented in three different formats including moneyline, decimal, and fractional. While these will look very different, they will tell you the exact same information about the bet including who you are betting on, who the favorite or underdog is, and what the potential payout you would receive from a correct pick. We will cover all of this in the next few sections.
A lot of people who are new to online betting aren’t aware of prop bets, because a lot of brick-and-mortar sportsbooks just don’t have the resources to allow them. These bets are a great way for you to make some extra money off of predictions that might not have a direct outcome on the winner of the game. For example, let’s say you think that the Warriors are going to shoot lights out from the field, but you think for some reason they aren’t going to get a lot of looks and are going to lose the game. Your only option without prop bets would be to bet on the team they are playing against, but that might not be a great value bet.
Let's use this formula to calculate the implied probability of the Celtics winning their game against the Grizzlies. We know the odds are -240, which means we'd have to risk $240 for a total potential return of $340 (the initial stake plus the $100 winnings). So the calculation here is $240 divided by $340. This gives us an implied probability of 0.7059.

Bets on “Winner of Point”, “Scorer of Goal" and similar offers refer to the participant winning the listed occurrence. For the settlement of these offers, no reference to events happening prior to the listed occurrence will be taken into consideration. Should the listed event not be won within the stipulated time frame, all bets will be declared void, unless otherwise stated.

As you can see, the public seems to think that Florida is going to win this game by more than seven points. If the game started now, the sportsbook would stand to lose a lot of money if Florida did in fact win by more than seven points. They would stand to make a lot of money if Florida lost or won by less than seven points. Regardless of how the sportsbook thinks the game will go, they are not in the business of gambling. They want to guarantee profit as often as they can.


Having a choice between the money line and the point spread gives the bettor more options. Consider a scenario where there is a strong favorite for a game. You might want to guarantee a smaller return by betting on the favorite to win on the money line – or you might want to almost double your money by betting on that team to not only win, but win by more than a certain margin. Conversely by backing the dog, on the money line you’ll receive a better return for your money but by backing the same team against the spread you have the insurance of still being able to win even if the team don’t.

The two results above are the no-vig probabilities. If you're sharp, you'll notice that adding 68.57% and 31.43% up together will give you 100%. The extra 2.95% has been removed, so there's no more vig. We can now go to our odds converter and enter 68.57% into the implied probability field. This will give us moneyline odds of -218. If we enter 31.43%, we'll get moneyline odds of +218. The original moneyline market of the Celtics at -240 and the Grizzlies at +210 therefore has no-vig odds of the Celtics at -218 and the Grizzlies at +218.


With NFL odds the over/under can vary but usually it’s somewhere between 35 and 47 points. Let’s say in the Colts and Bengals game that the total is posted at 37.5. If Indy scores 27 and Cincy gets 13 points, the total would be at 40 and the over would win. But if the Colts rack up 35, and they shut out the Bengals, the total of 35 would be under.

You may often notice that the spread is sometimes set at an even number such as 3, 6 , 10, etc. In this case if the favored team won by the exact amount set for the spread the bet would be pushed, and all bets would be returned. For example, if the Patriots were 3 point favorites and they won by a FG (3 points) than this would results in a push, meaning no matter which side you bet on you would get your money returned to you.


The key to successful betting lies in quality and not quantity. Your overall chances of winning are much greater if you pick your spots carefully, and only bet when you find real value. There isn't a huge number of NFL games each week, but there's enough that it's simply not realistic to think you can handicap them all. And if you're also betting on college games then this is even more of an issue.

As an example, let’s consider a matchup between the Indianapolis Colts and the Cincinnati Bengals. In our scenario, the Bengals are the home team, which means they will be listed last and the Colts, as the visitors, will be on the odds slip first. If Indy’s rotation number is 101, then Cincy’s rotation mark would be 102. When you place a bet live at a Vegas sportsbook or over the phone, you would say the number of the team on which you want to wager and not the name.
The favorite team or player on the moneyline is the team that’s expected to win. This side of the bet usually listed with a minus (-) sign. The underdog team or player on the moneyline is the team that’s expected to lose. This side of the moneyline is usually listed with a plus (+) sign. These signs signify how either side of the wager will pay. The minus side will pay less than original wager while the plus side will pay more than the original wager.

Bets on "Race to X Points / Race to X Goals..." and similar offers refer to the team/participant reaching the earliest particular tally of points. If the offer lists a timeframe (or any other period restriction) it will not include any other points tallied from other parts of the event which are not related to the mentioned time frame. Should the listed score not be reached within the stipulated time frame, all bets will be declared void, unless otherwise stated.


Bookmakers use odds to even out the bets, getting gamblers to wager on both sides of the line by leveling the playing field. Although there is overall parity in the NFL, there are teams that are haves and others that are have-nots. Indianapolis is still superior to Cincinnati but when they play each other the bookies have to get about half of the bettors to put cash on the Bengals. This covers the sportsbooks ensuring they’ll make a decent amount of cash on just about every game.
Actually handicapping games is far from simple though. Or, at least, handicapping them well is. There are all kinds of different factors that can affect the outcome of a game, and you need to take as many of them as possible into account. You also need to assess just how much of an impact those factors will have, and try to accurately evaluate just how likely a team is to win. For more advice on how to do this, please see the following article.
The sportsbook will sometimes move this line if they need to encourage more bets on one side of the game. Their end goal is to have the same amount of money bet on both sides of the game so that no matter who wins, they make money. For as much as they love to facilitate gambling and betting, they don’t like to leave things to chance for themselves.
When unforeseen events occur such as weather, power outages, or any other unanticipated event once the game has started, many people wonder how that will affect the wager. If an event has not started, all wagers should have no action and be refunded. But if the event has started and is interrupted and not completed it gets a little more complicated. The following will examine the special rules for each sport and give you a better idea of what to expect should the event not be completed on the same night. Always check with your book to know any special rules that may apply but according to the letter of the law: the following is how each event should be interpreted.

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.
A common mistake that new bettors will do is to bet every single game. Unfortunately, this is not a winning strategy no matter how sharp you are. Stick to betting the games where you actually see value. Here's what we mean by value. Let's say in our earlier example that you agree with the sportsbook that the Florida Gators should win the game by seven. You should not bet this game then no matter what if the line is -7. If you're right, the best you can do is tie on your bet. When you pick a side, you're basically going to be guessing and flipping a coin. Theoretically, you'll win as many times as you lose, but you'll be paying the house percentage every single bet and slowly bleeding your money and profits away.
If your sports betting experience consists mostly of office pools during March Madness or a casual wager between you and a friend while you watch the Super Bowl, the transition to serious sports betting means learning how to read betting lines. The biggest difference between making the kind of casual bets mentioned above and placing wagers with online sportsbooks or at brick-and-mortar bookshops is the use of sports betting lines. Casual wagers usually involve each person in the bet picking one team to win, then wagering an equal amount, say $20 or $30. Professional bookmakers, online sports betting exchanges, and sports betting facilities in casinos have a more complex system for offering wagers on sporting events, in part to ensure profit on the part of the book, and in part to present a standardized representation of odds.
The secret to winning sports bets is finding value and picking winners. There is absolutely zero correlation between the complexity of a bet and how likely you are to win. In fact, you could say that there is a negative correlation because a lot of bettors don’t fully understand the complex bets they are making, meaning they are more likely to make mistakes and incorrectly assess value.
In North American sports betting many of these wagers would be classified as over-under (or, more commonly today, total) bets rather than spread bets. However, these are for one side or another of a total only, and do not increase the amount won or lost as the actual moves away from the bookmaker's prediction. Instead, over-under or total bets are handled much like point-spread bets on a team, with the usual 10/11 (4.55%) commission applied. Many Nevada sports books allow these bets in parlays, just like team point spread bets. This makes it possible to bet, for instance, team A and the over, and be paid if both team A "covers" the point spread and the total score is higher than the book's prediction. (Such parlays usually pay off at odds of 13:5 with no commission charge, just as a standard two-team parlay would.)
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