The general purpose of spread betting is to create an active market for both sides of a binary wager, even if the outcome of an event may appear prima facie to be biased towards one side or the other. In a sporting event a strong team may be matched up against a historically weaker team; almost every game has a favorite and an underdog. If the wager is simply "Will the favorite win?", more bets are likely to be made for the favorite, possibly to such an extent that there would be very few betters willing to take the underdog.

Betting on the point spread is completely different from betting on teams to win a game outright. Known as "betting on the moneyline", instead of using points to handicap each side of the wager, the sportsbook will use greater payouts versus the amount risked to reflect their relative perceptions; teams not expected to win (underdogs) pay more, sometimes exponentially, than when betting on the favorite to win when wagering on moneylines.
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.
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.
The optimal situation for bookmakers is to set odds that will attract an equal amount of money on both sides, thus limiting their exposure to any one particular result. To further explain, consider two people make a bet on each side of a game without a bookmaker. Each risks \$110, meaning there is \$220 to be won. The winner of that bet will receive all \$220. However, if he had made that \$110 bet through a bookmaker he would have only won \$100 because of the vig. In a perfect world if all bookmaker action was balanced, they would be guaranteed a nice profit because of the vig.
On the other hand, underdog moneylines can be lucrative wagering opportunities. Upsets happen more often than some of us think and moneyline betting is a great way to take advantage. For example, for a moneyline wager of +250, a bettor will only need to win about 28% of the time to break even and for a +300 wager the bettor would only need to win 25% of the time to break even. If you can spot upsets even decently well, moneyline wagers on underdogs can be profitable bets.

Betting on sporting events has long been the most popular form of spread betting. Whilst most bets the casino offers to players have a built in house edge, betting on the spread offers an opportunity for the astute gambler. When a casino accepts a spread bet, it gives the player the odds of 10 to 11, or -110. That means that for every 11 dollars the player wagers, the player will win 10, slightly lower than an even money bet. If team A is playing team B, the casino is not concerned with who wins the game; they are only concerned with taking an equal amount of money of both sides. For example, if one player takes team A and the other takes team B and each wager \$110 to win \$100, it doesn’t matter what team wins; the casino makes money. They take \$100 of the \$110 from the losing bet and pay the winner, keeping the extra \$10 for themselves. This is the house edge. The goal of the casino is to set a line that encourages an equal amount of action on both sides, thereby guaranteeing a profit. This also explains how money can be made by the astute gambler. If casinos set lines to encourage an equal amount of money on both sides, it sets them based on the public perception of the team, not necessarily the real strength of the teams. Many things can affect public perception, which moves the line away from what the real line should be. This gap between the Vegas line, the real line, and differences between other sports books betting lines and spreads is where value can be found.
A point spread (or line) is a tool used by sportsbooks to attract wagers on both sides of a game. The line is most commonly used in football and basketball games. Because it’s rare for two teams in a pro sports game to be completely evenly-matched, one team will have an advantage, another will be seen as the underdog. The point spread is the handicap offered to the underdog to level the playing field, so to speak.
If you want to bet on football, then you have plenty of options. There are not only lots of games you can bet on, there are also lots of different types of wagers you can place. Point spreads and totals are the most popular types, by quite a distance, and many football bettors stick solely to those. This isn't really the ideal approach, as some of the other wagers can be very useful in the right circumstances.
Sports betting is not just about being able to pick out the winner and loser of a game. Because of the various different bet types, there is a lot of different strategies that goes into how you approach them. Point spread bets are no different. One of the biggest tips we can offer is to make sure that you fully understand what you are betting on. A great pick is only great if you actually put your money behind it correctly. Thankfully, this guide should have you fully prepared for that.
The first part of each line tells you who you are betting on. The first line is a bet on Mike Tyson and the second line is a bet on Old Man River. Next, you’ll see a plus or a minus sign. The plus sign signifies the fighter who is an underdog, and the minus sign signifies the fighter who is the favorite. As you can see, Mike Tyson is the favorite and Old Man River is the underdog.
We went into detail earlier about what causes moneylines to move. The better you can get about predicting when these movements will occur and in what direction, the more profitable you’re going to be as a sports bettor. If you find a bet that you like, but you predict it’s going to move more in your favor, you can intelligently wait to bet and lock up a potentially much more profitable opportunity.
Remember that every spread still has a moneyline attached to it. While that might be a bit confusing, all that refers to is the cost of betting the spread; not how the outcome will be decided. For example, if someone says to you that “the Patriots are laying three points but I have low juice, so my moneyline is -104”, what they are referring to is the price of betting the spread. That merely means that they are betting the spread but the moneyline attached to betting that spread is -104.

#### Sometimes a line will move far enough to create a “middle” opportunity. Say the Texas Longhorns end up facing the Wisconsin Badgers in the first round of March Madness. If you have Texas early as a 5-point favorite, and I move the line to Texas –7 later in the week, then you can also place a bet on Wisconsin +7. If Texas happens to win by six points, both your bets cash in. Texas winning by either five or seven gives you a win and a push. Any other result creates a win and a loss, so you’re only risking the vigorish.

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