The house vigorish - and your chances of winning - get worse with the more teams you add. So while some sportsbooks will let you place a 15-teamer with astronomical odds, you probably have a better chance of being struck by lighting - twice - before winning one. You are much better off sticking to two-team parlays exclusively, if you insist on taking poor odds and placing parlay wagers.
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.
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.
Apply the spread. In point-spread betting, the actual final score of the game is only the starting point. Say Chicago beats Detroit 24-17. Because Chicago was the favorite, you subtract the point spread from its final score. That's the purpose of the minus sign in the spread. The spread was 6, so you take 6 points away from Chicago's point total, giving you an "adjusted" score of Chicago 18, Detroit 17. If you'd bet on Chicago, you'd have won the bet. Now, say Chicago won the game 20-17. Subtracting the 6 points from Chicago's total gives you a final score of Detroit 17, Chicago 14. If you'd bet on Chicago, you'd have lost.
Another thing to consider is popular winning margins, which are particularly applicable to football. Consider that many tight games may finish with either a three point or a seven point margin. If the point spread is around either of these marks, make every attempt to be the right side. For example, if you were to back a team that is either 2.5 or 3 point favorites, you’d want to back them at the 2.5 mark, as if they were to win by 3 you’d win as opposed to a push.

The way the sportsbook does this is by putting out a betting line that is based on how many points they think the better team is going to win by. This is a lot like how our older siblings would "spot us" a few points when we played each other in basketball as kids. For example, let's say that Florida Gators are playing the Arkansas Razorbacks. Let's also say that Florida is the better team and the sportsbook thinks they are going to win the game by seven points. They can't just let everyone bet evenly, or everyone would bet Florida and clean them out. Enter the point spread. The sportsbook would set the point spread on this game at -7 for Florida to win. The negative sign before the number signifies that this team is the favorite to win. This means that if you want to bet on Florida, they have to win by more than 7 points for you to win your bet.
The money line bet always relates to bets of $100. A favorite will be represented by a negative money line figure such as -180. This means that in order to profit $100 off your winning bet, you would need to risk $180 dollars. But as I’m sure you already know, you can risk any amount you are comfortable with and the payment (should you win) will be in proportion to the odds. For example, a $50 bet on a -180 line would win you $27 dollars.
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.

We mentioned we would touch on the -3500 bet in this section. If you calculate the implied probability of -3500, you see that it is 97.2%. This means that the bet will have to hit 97.2% of the time for you to break even. Now, if you think that the bet is actually 100%, then it might be a smart bet to make. You’re still going to have to put up a lot of money to see any real sort of profit, which might not be desirable based on your personal preferences.
The "Total Points", also known as Goals or Runs, is a 2 selection odds based on the total number of points scored in a game or event by the competitors. The "Total" is set at a specific line with outcomes listed as either Over or Under the listed amount. As with Point Spread/Handicap betting, in those circumstances where the result of the game or event Total point scored is exactly equal to the betting line, then all bets on this offer will be declared void. “Totals” can also be set on any number of predefined occurrences (e.g. goals, points, corners, rebounds, penalty minutes, etc.).

The team that has the minus sign, which is the favorite, has points deducted from its final score, while the dog, with the plus sign, has points added. The favorite must beat the spread, which means they have to win by more than the negative number to pay off. The underdog pays off in two instances—if they win outright or if they lose by less than the spread.
Linemakers who work for the sportsbooks must put out lines that will entice the "favorite" bettors to lay the points and take the favorite or entice the underdog bettors to take the points with the underdog. Because each sportsbook is operated under their own rules, guidelines and stipulations, they are free to put out whatever line they feel is competitive and charge whatever vig they want to based on how much action that specific line is taking.
Especially in major tournaments, some sports books offer odds on unusual golf propositions, such as the over/under on the winning score, the over/under on the lowest round by any golfer or the over/under on the finishing position by a particular golfer. For example, the over/under on Woods' finishing position may be 3 1/2. If he finishes first, second or third in the tournament, the "under" wins; if he finishes fourth or worse, the "over" tickets cash.
The only real downside to betting basketball point spreads is that the sportsbook charges a vig. While this is a downside, it is to be expected and is no different from placing any other sports bet. Obviously, the sportsbook has to make money somehow because they have to pay employees, pay for their servers or equipment, and pay for their customer service to keep you happy. This really isn't a negative about point spread bets, but just something that you should be aware of.
You can bet the money line option in every single sport that is offered up. It is the simplest form of betting and it is also the primary way to bet sports in which a point spread isn’t available (think hockey or baseball). Money line wagers are also available in football and basketball, but the point spread wager is much more popular. It is also used in tennis, golf, boxing, MMA, cricket, table tennis, and any other sport you can think of that has a winner at the end of the game.
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.
Let’s say you decide to bet $100 on the Packers to win by more 7 points and the final score is Packers 30, Seahawks 21.  The Packers have won by 9 points, meaning they’ve covered the spread, and you’ve won the bet. The -110 means that your $100 bet will win you a total of $190. That total includes your original bet amount, so your total profit is $90.
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