Of course, it wouldn’t be. Everyone would bet on Mike Tyson, and the sportsbook would lose all of their money and close the next day. So what the sportsbooks do is they assess who is the favorite and who is the underdog and assign a value to how much in each direction they think they are. Let’s look at what the odds might look like for our fictitious fight and break down what everything means.


At a site that offers a free play bonus, you'd bet $100 free play on the Grizzlies at +210. At another site, where you have a cash balance, you bet $150 cash on the Celtics at -240. If the Grizzlies won, you'd win $210 cash from your free play but lose your $150 cash. That's a profit of $60. If the Celtics won, you'd win $62.51 from your cash bet and lose only your free play credit. That's a profit of $62.51
Earlier, we explained how the implied probability of -240 is 70.59% and how the implied probability of +210 is 32.36%. Notice these two probabilities total 102.95%. The extra 2.95% is the bookmaker's advantage. It's called vig, and it's basically a commission that they charge customers for placing wagers. By removing the vig, you can see what the fair odds on the game would be.

If you're seeing 15 or 25 instead of 15/1 or 25/1, you're seeing a decimal form of odds, as opposed to fractional. Multiplying your stake by decimal odds gives your total return, not your profit(which is total return -stake). To get to fractional from decimal, add 1. So 3/1 fractional = 4 decimal (just 4). 4/6 frac = (4/6+1) dec = 10/6 = 5/3, or 1.666, which is rounded to 1.67 by bookies. To go from decimal to fractional, subtract 1(which makes sense from profit = total return - stake) So 15 dec = 14/1 frac. 2.33... dec = 1.33/1, or 133/100.


What may look like a jumble of words, numbers, and punctuation is actually a precise and easy-to-read breakdown of the various odds and point spread details your book is offering. Here is a breakdown of each unit of information given above. Once you understand each part of the jumbled details above, you’ll be able to read a sports betting line with confidence.
If the implied probability says that you have to win a bet 40% of the time to break even, and you think you’re likely to win the bet 45% of the time, then there is value in the bet. Remember, the sportsbook pays you more the less likely something is to happen. This means you’ll be getting paid as if the bet is only going to hit 40% of the time (more money), but the bet actually hits 45% of the time if you are right.
All connotations related to the bet must be fully and unquestionably complied with for the bet to be deemed as winning, regardless of any possible conflict with the sport-specific rules, or with any potential interpretation based on previous or current presentation of offers related to events in that particular sport and the way these are normally presented in DraftKings Sportsbook. Bets will be settled as void should it still be impossible to determine a winning outcome.
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.

"Point Spread" or "Handicap" odds are when it is possible to bet on whether the chosen outcome will be victorious once the listed handicap is added or subtracted to the game to which the bet refers to. In the circumstances where the result after the adjustment of the handicap line is exactly equal to the betting line, then all bets on this offer will be declared void. Example: a bet on -3.0 points will be declared void if the team chosen wins the match by exactly 3 goals difference. Any reference in this section to the term "margin" is intended to be understood as the outcome emerging from the subtraction of the points scored by the 2 opponents.
Without point spread betting, placing a wager on our team to win these games would be financial suicide. Point spreads create an even playing field for sports bettors. Even if your team is supposed to lose by 20 points, you can still bet on them if you think they're going to have a better day than predicted. If you've ever wondered why someone was still cheering and going nuts at the end of a blowout, you can bet they were sweating a point spread bet.
For example, if you’re betting on teams A, B, and C to win outright, you’ll have two round robin options available. Your By 2’s option includes all possible 2-team parlays for these three wagers (A+B, B+C, and A+C). And your By 3’s option includes all possible 3-team parlays on these 3 wagers (A+B+C). If you wager $30 on the By 2’s option, that money will be split evenly among the 2-team parlays ($10 on each of the 3 wagers).

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)
Sometimes with NFL odds you’ll see a spread posted as a whole number. Decimals or fractions are usually utilized to ensure there won’t be a tie. If in our example the spread was reset to 10 with the Colts favored and they win by 10, then the game is considered to be a tie, which in betting terms is called a push. If there is a push all bets are off and the sportsbooks return all wagers back to the bettors.
Overtime and the shoot-out does count for NHL point-spread results in Ontario. Whenever you see a game -0.5 essentially both teams have a spread of -0.5 and your team has to win the game for you to win the bet. Lately there have been more -1.0 / +1.0 NHL spreads in Ontario. If you choose the -1.0 spread and the game goes to overtime you cannot win the bet. You can only push the bet if your team wins in overtime or the shoot-out. Conversely, if you choose the +1.0 spread and the game goes to overtime you cannot lose the bet but will push the bet if your team loses in overtime or the shoot-out.
Earlier, we explained how the implied probability of -240 is 70.59% and how the implied probability of +210 is 32.36%. Notice these two probabilities total 102.95%. The extra 2.95% is the bookmaker's advantage. It's called vig, and it's basically a commission that they charge customers for placing wagers. By removing the vig, you can see what the fair odds on the game would be.
The point spread is essentially a handicap towards the underdog. The wager becomes "Will the favorite win by more than the point spread?" The point spread can be moved to any level to create an equal number of participants on each side of the wager. This allows a bookmaker to act as a market maker by accepting wagers on both sides of the spread. The bookmaker charges a commission, or vigorish, and acts as the counterparty for each participant. As long as the total amount wagered on each side is roughly equal, the bookmaker is unconcerned with the actual outcome; profits instead come from the commissions.
The true purpose of a pointspread when it is released by any sportsbook is to try and attract an equal amount of betting action on either side of a matchup. If all the early money is flooding in on New England as the favorite with a seven point spread, the betting outlet handling this action is likely to move that betting spread to 7.5 points to try and attract some money towards Miami as the underdog.
If a fight is scheduled for more than four rounds and, after four rounds, an accidental foul occurs which causes an injury (further to which the referee stops the fight), the fight will be deemed to have resulted in a technical decision in favor of the boxer who is ahead on the scorecards at the time the fight is stopped (and all markets on the fight will stand).
Here’s a less extreme example. Let’s say that Fighter A is fighting Fighter B and you think that Fighter A is going to annihilate Fighter b. Like you don’t even think it’s going to be close. Let’s say you decide that you would be willing to bet even if the odds were -400 on Fighter A. You’d only be getting $25 back on your bet, but that’s what you think is fair.
You can never rule out the weather in sports. If there is a team or contestant who does better in certain conditions but worse in others, you’re going to see a line movement if the conditions change. For example, a football team that has a strong passing attack might become less of a favorite if rain pops up in the forecast. Often, the line does not shift as quickly as it should in response to changing weather conditions, which can create some good opportunities to find value.
If you've never set foot in an actual sportsbook before or logged into an online sportsbook, the chances of you getting overwhelmed when you actually do is very high. In an actual Las Vegas sportsbook, there is typically a lot of commotion and the odds and lines are displayed on a massive digital board for everyone to see. When a novice sports bettor looks at the massive digital signage, they will see a bunch of numbers, both positive and negative, some two digits, some three digits. They also won't have a clue what any of it means. The same can be said for the online sportsbooks. It looks like a massive spreadsheet with negative and positive numbers beside each teams' name.

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.

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.
While we aren't exactly sure at which dollar amounts or what formulas sportsbooks use to determine when they shift the lines, we do know why they do it. It is their attempt to minimize their risk as much as possible and guarantees sportsbook profit. Lines will also move if something major happens (like Lebron breaking his leg or something) so keep an eye out for this. Ultimately, the shift in the line is done for the exact same reason to keep the same amount of money on both sides of the game. As you'll see in the strategy and tips section, shifting lines do present some interesting opportunities for sports bettors.

This may sound confusing, but spread betting is one of the easiest forms of sports betting offered. It also offers better odds when betting on the favorite team and the normal odds are 10/11 or -110. When one chooses to bet on the underdog that team does not have to win, they just have to cover the spread. Spread betting is pretty simple and it allows punters to enjoy an exciting form of betting that can lead to some significant wins.


Additionally, we’ll discuss line movement, how the casino profits (important for you to understand), and moneyline betting strategies that can help you crush the books. These strategies will range from basic to advanced, so even the most seasoned of sports bettors should expect to get some value from this. Feel free to skip to a specific section if you came here for specific information. If you’re newer or it’s been a while since you’ve bet, we highly recommend reading this guide from top to bottom, as the sections will build on knowledge from previous sections.
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.

It is a pretty simple concept once you get the hang of it, and you will also start to see profitable opportunities in football and hoops where wagering on the moneyline makes more sense than betting the point spread. If you really like an 8-point underdog in the NFL and think they will win, you can take the 8 points and hope they cover the spread. Or you can check out the moneyline option where they might be +280 and make more money betting them to win ($280) than on the point spread ($100).
A spread is a range of outcomes and the bet is whether the outcome will be above or below the spread. Spread betting has been a major growth market in the UK in recent years, with the number of gamblers heading towards one million.[1] Financial spread betting (see below) can carry a high level of risk if there is no "stop".[2] In the UK, spread betting is regulated by the Financial Conduct Authority rather than the Gambling Commission.[3]
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