A betting line is a form of wagering whereby the bookmaker or sportsbook set gambling odds and determine the favorite and underdog teams in a match. This handicap creates a margin (line) between the two teams, where there are only two outcomes possible, and sets the parameters for wagering on the game. An Example of How Betting Lines Work. A money line bet is arguably one of the most straightforward ways of betting on sports like the NFL. In fact, it is probably the type of bet that we are all most familiar with, as it involves simply placing a bet on the team that you think is going to win.
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.
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:
DAL -7.5-110 -405
NYG +7.5-110 +300
56.5 ov-110
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.
The Point Spread
Obviously, the first three letters on the top two lines of the three-line package of symbols represents a team in the game you’re wagering on; NYG stands for the New York Giants, while DAL stands for the Dallas Cowboys. The number next to each team’s name is known as the spread or the point spread. Wagers on the point spread are among the most popular sports wagers in the world. The reason this wager is popular is that it doesn’t matter which team wins or loses; what matters is the amount of points the teams score, and whether or not the team you place your money on beats the difference in points (the ‘spread’) or not.
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.
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.
A quick word on that annoying half point in the point spread – most lines you’ll come across will use half points, but it’s not standard practice across the board. When you see a line with a full number instead of a number with a half point, your wager could end up as a push. In our example, if the line were 7 instead of 7.5 and the final difference in points was exactly 7, your wager is returned to you, and neither you nor the book makes money.
What’s the function of the second number in the line?
The second number in our example (-110 for both teams) tells you how much you have to wager in order to win $100. It’s an easy way to calculate how much you’ll win if your bet pays off, presented in units of $100 at a time for simplicity’s sake. Most of the time, these two numbers will be the same, because oddsmakers want to set lines so that they get as much action on the underdog as on the favorite, guaranteeing them a profit. If a book gets a single bet of $110 (by a customer hoping to win $100) on the Cowboys and a single bet of $110 on the Giants, it will have taken in $220, but will only have to pay back $210 to whichever customer wins the bet. That’s a guaranteed profit of $10, and since sportsbooks take far more than a single bet in either direction, they stand to earn that seemingly small amount of profit many times over. The $10 difference between what you wager and what you win is known as juice or vig in the sports betting industry, and it’s the way books earn their bread and butter.
What does the last number in the line mean?
The last number in the top two rows of our sports line example is known as the money line. If you’re not interested in betting on the point spread, you can wager on a team to win outright. The plus sign next to the underdog (in our case, the Giants) indicates how much money you’ll earn for every $100 you bet on the money line. Conversely, the minus sign next to the favorite’s line tells you how much you have to wager in order to win $100. In our example, a $100 wager on the Giants earns you $300 should they pull off the upset, while a bet of $405 on the Cowboys will net you an extra $100. Representing odds in units of $100 makes placing different size bets easy; if you want to bet $10 on the Giants, you stand to earn $30 if they win, while a $40.50 bet on the Cowboys will net you an additional $10.
What does the bottom row of numbers and letters mean?
The final line of information in our example line is the over-under. Wagers placed on the over-under have nothing to do with which team wins or the difference between the points they score, but rather the combined number of points both teams will score in the game.
The first number (56.5 in our sample line) is the book’s predicted total score, while the second number (110 in our Giants/Cowboys rivalry game) is how much a punter has to bet in order to win $100. If you were to bet the over-under on this game, you’ll have to decide whether you think the combined score of both teams will be higher or lower than the number put up by the book. Let’s say you bet the over, assuming the game will be a shootout between two talented offenses, you’re hoping that the final score will be anything that totals 57 or more. It could be Dallas 54, New York 3, or any other point combination that adds up to 57 or more and your bet will win. Betting the under means that the two teams cannot score more than 56 points combined, or else you lose your bet.
Reading sports betting lines becomes easier with practice and experience with different sporting events. What looks like a jumble of letters and numbers actually gives a lot of information in a tiny amount of space. Different sports have different types of wagers available, such as the run line in baseball or the puck line in hockey, both of which replace the money line found in our football example. The more experience you have watching and gambling on different sports, the faster you’ll be able to read betting lines.
In the world of sports betting, a money line bet is simply betting on which team you expect to win. It doesn’t have anything to do with a spread. You may also see a money line bet listed as “Money Line” or “ML” in different spaces.
Money lines are represented in negative and positive values.
When you see a minus (-) sign in front of a price, it shows you that team is the favorite to win the game.
That number also indicates how much money you need to bet/spend in order to win $100.
For example, a -220 money line means you need to bet $220 in order to win $100 provided the team you bet on actually does win.
Heavy favorites are known in sports betting as a “chalk” pick. A heavy favorite usually has a number pushing +300 or more. Here, you’re wagering a lot on the favorite to win a little. Don’t assume that a heavy favorite, or chalk pick, is a guaranteed winner…
When you see a plus (+) sign in front of a price, it shows you that team is the underdog. Higher numbers like +400, +500, +5000, etc. represent how much of an underdog the team is in the game. The higher the number the more likely the team is expected to lose in the eyes of the oddsmakers.
The number also indicates how much money would win in comparison to every $100 you wager.
For example, a +150 money line means you would win $150 for each $100 wager you place should that team win the game.
Lets use an NFL example here:
New England Patriots -240
Miami Dolphins +220
To bet the New England Patriots to win on the money line, you would need to spend $240 on the bet for a chance to win $100 if the Patriots beat the Dolphins. Your return would be $340 – the original $240 stake (bet) and the $100 bet profit.
To bet the Miami Dolphins to win on the money line, you would spend $100 on the bet for a chance to win $220 if the Dolphins, as the underdog, beat the Patriots. Your return would be $320 – the original $100 stake (bet) and the $220 profit.
In both situations, it doesn’t matter if the team you bet on wins by one point or 100 points. You’re purely betting on the team you believe will win the game. As Al Davis said, “Just win, baby.” That’s exactly what you’d be looking for out of your selection. It doesn’t have to be pretty, it just has to happen or your original stake is lost.