Let's say you think Liverpool is going to win the game, but you think they are only going to win by three goals. If the first bet were the only bet available, you wouldn't be able to bet on this game unless you were a maniac. This handicap bet gives you more options, though! The next rectangle down is a similar bet except for this time it is Liverpool at -2, getting paid 13 to 5. If you take this wager, you need Liverpool to only win by three or more goals now, instead of four. If this happens, you will get paid at 13 to 5 or $260 for every $100 you wager. As you can see, this is more likely to happen, so you are going to be paid less for the bet. However, it does give you an option to bet what you want.
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.
In an effort to have equal money on both sides of a wager, the sportsbook operator will move the point spread to attract money on the side that customers aren’t betting on. The odds for a point spread might change before the actual point spread. There are certain point spread numbers, like 3 and 7 in football, the sportsbook operators would like to avoid moving away from since they final score margin falls on these two numbers most often.
The reason why you will typically see a (-110) line next to a point spread is simple. This is the commision in which the sportsbooks charge for you to place your wager. This is how the casino makes their money. Think of it as a commission. You make a bet, they charge 10% for you to do so. Bookmakers call this “Vigorous or Vig” it’s also known as the “Joice”
A wager on the Giants on the spread does not mean that New York has to win the game in order for you to win cash. All the G-Men have to do is come within 8 points of the ‘boys, and you’re a winner. You determine a winning or losing point spread by adding or subtracting 7.5 from the final score, depending on which side you laid your bet. If you’re confident that New York will at least come within a touchdown of beating the Cowboys, or beating them outright, then you’d wager on the spread in favor of New York.
You should already know that the Eagles are the favorite to win and that you should expect less than even money on a correct pick here. You should also know that the Falcons are the favorite, and you should expect better than even money on a correct pick here. Having this in mind every time before you start your calculations will protect you from making a mistake and calculating the completely wrong direction.
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One important assumption is that to be credited with a win, either team only needs to win by the minimum of the rules of the game, without regard to the margin of victory. This implies that teams in a winning position will not necessarily try to extend their margin—and more importantly, each team is only playing to win rather than to beat the point spread. This assumption does not necessarily hold in all situations. For example, at the end of a season, the total points scored by a team can affect future events such as playoff seeding and positioning for the amateur draft, and teams may "run up" the score in such situations. In virtually all sports, players and other on-field contributors are forbidden from being involved in sports betting and thus have no incentive to consider the point spread during play; any attempt to manipulate the outcome of a game for gambling purposes would be considered match fixing, and the penalty is typically a lifetime banishment from the sport, such is the lack of tolerance for gambling in sport.
Shopping betting lines is one of the most important things you can do when betting point spreads in basketball. While the majority of sportsbooks will have the same line, it's fairly common that you can find lines that are a half or full point different. This can have a huge impact on your bottom line. If you don't think a half point or one full point makes that big of a difference, just ask anyone who has bet sports for a while. They will inform you that getting an extra half point is like winning the sports betting lottery.
Only bet games where you have a clear prediction on a team covering the spread. Look for lines that you think are incorrect and put your money there. The idea here is to be making intelligent picks that you actually believe will win. If you're betting every game, you're just gambling and no longer letting your skill and knowledge base shine through.
Something that all of our pro bettors on staff preach is that there is no reason to make anything more complicated than it needs to be. Specifically, they are referring to the awful trend of aspiring sports bettors thinking that you must make more complex bets in order to make a living betting sports. The reason we say it’s an awful trend is because this couldn’t be further from the truth.
Just like the minus and plus values on the point spread, those values designate underdogs and favorites in moneyline betting. In this case, Toronto is favored at -185 (bet $185 to win $100), and Baltimore is listed as the underdog at +165 (bet $100 to win $165). In explaining the concept of moneyline betting further, it might help to view the number 100 sitting between the favorite and underdog values: +165 +100 -185

In football the money line is often a popular choice for bettors who have been burned by last-second scoring that actually had no actual affect on the outcome of the game. With the money line you just have to hope your team wins rather than cover a point spread. Of course, the one downside is having to risk more money to return the same amount that a point spread bet would net you.
Typically hockey is not a popular sport when it comes to point-spread betting because most games are decided by only a goal or two. Sports like football and basketball are better for point-spread betting mainly because they are higher scoring sports. However, Proline does offer NHL point-spread betting and it can get confusing so let’s take a look at how it works.
As we mentioned, moneyline/win bets take into account who the favorites and who the underdogs are and will pay out winning bets accordingly. Here’s a quick example that will make this clear. Imagine that Mike Tyson (one of the greatest boxers of all time) is going to fight against an 80-year-old man. If the sportsbook let you bet on either side of the fight and paid you the same, would that be fair?
A teaser is a bet that alters the spread in the gambler's favor by a predetermined margin – in American football the teaser margin is often six points. For example, if the line is 3.5 points and bettors want to place a teaser bet on the underdog, they take 9.5 points instead; a teaser bet on the favorite would mean that the gambler takes 2.5 points instead of having to give the 3.5. In return for the additional points, the payout if the gambler wins is less than even money, or the gambler must wager on more than one event and both events must win. In this way it is very similar to a parlay. At some establishments, the "reverse teaser" also exists, which alters the spread against the gambler, who gets paid at more than evens if the bet wins.
Moneyline bets are by far the most popular type of sports bet that you can make. What’s great about moneyline bets is that they are not only simple enough for beginner sports bettors to understand and utilize properly, but they are also heavily used by professional sports bettors to rake in huge wins every single day in sportsbooks all across the world. In fact, there are many wildly-successful professional sports bettors who exclusively use moneyline bets in their winning strategy.

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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.
There is no such thing as a half point in sports, but there is in sports betting!  The half point ensures that a side will win and that the match will not end in a push, where the spread equals the actual difference in points between the two teams.  In a push all bettors get their money back, which is no good for the oddsmaker!  Half points also give oddsmakers more control over lines, allowing them to set more specific values.

Placing a point spread bet means gambling on how much a team will win or lose by. In our above example, the Cowboys are the favorite. How do we know that? The minus symbol in front of the point spread indicates that the bookmaker thinks the final score will have Dallas winning by 7.5 points or more. The underdog, in our example that’s the New York Giants, will always be indicated with a plus sign. If you wager on the Cowboys on the point spread, America’s Team will have to win by at least 8 points for your wager to pay off. Should the Cowboys win by less than 8 points, your bet is lost.

In this example, we have a favorite to win, and an underdog. The Packers are the favorites, and that is shown by the (–) value in front of the 6. Underdogs are represented by the (+) value.  The 6 point value is how many points either team could win, or lose by. If you think the Packers will win by MORE than 6 points, then you’d bet on the favorite in this case, meaning that the Packers have to win by 7 or more points in order for you to win your bet.
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