I’ve titled this Sports Betting For Dummies. It’s a tutorial for those who want to start betting on sports or those who want to gain a better understanding of some of the terminology and theory behind it. We’ve all been in the position of learning something new, so please don’t be embarrassed if you don’t grasp these concepts. Instead, contact me via the form at the bottom of this page, and I’ll help you in any way I can.
If you like favorites, you're going to be betting a lot to win a little. The money line will always be listed to the right of the point spread on the odds board in a sports book. In the above example, the money line would probably be Chicago -250 and Detroit +200. To bet Chicago simply to win, you must wager $250 to win $100, while a $100 bet on Detroit would pay $200 if the Lions come through.
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.
What's the difference between an oddsmaker and a bookie? A bookie's job is purely mechanical. He gets the line from Vegas or another source, offers bets at those odds, then collects money from the losers, pays out to the winners and keeps the vig. Oddsmakers don't actually take bets -- they study the games and set the lines. Bookies often adjust the spreads for their games, so they do a little oddsmaking, and oddsmakers work for casinos, which operate sports books that take bets.

Point spreads focus on a margin of victory between the two teams and again, what you’re looking for is the positive and negative signs. If there is a minus sign next to a team’s spread, that suggest that they are favored and have to win by or cover that amount. If there is a positive sign, that tells you that they are the underdog and they are getting points. For example: let’s say that the New England Patriots are playing the Buffalo Bills and the Patriots are -5.5 and the Bills are therefore +5.5. If you bet the Patriots, they have to win by six points or more to cover. If you bet the Bills, they can lose by five points or less, or they can win the game outright and you would still win your bet.
The majority of bets on any sport are usually on the final outcome of the particular contest. However, for sports like the NFL and NBA, there are 1st quarter and 1st half lines offered as well. The quarter spread is used to determine who will be the winner at the end of the 1st quarter. The same is true for a 1st half line, only the wager ends when the first two quarters are completed. Generally, the 1st half spread will be close to half of the overall spread on the game.
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.
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.
Much like any business venture you embark on, the most important part of the journey (for most) is the bottom line. We live in a world where cash rules everything around us, so it is vital to turn a profit, not only for living purposes but to feel successful and accomplished. In the sports betting world, turning a profit seems to be a walk in the park for sportsbooks. They keep track of their billions of dollars by using a term called "handle" and nobody is aware of how big the handle is until the sportsbooks tell us. Read More >>

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)
The -110 listed is the actual odds given for these bets, and the odds determine how much you win based on the amount of your wager. This is why the odds are often called the price of a bet. When you see -110 odds, you need to bet $110 to win $100. Of course, you don't need to literally bet $110; that is just the ratio of the amount bet to the amount won. You can bet $11 to win $10, $20 to win $18.18, etc.

If bettors were quick to jump on the Atlanta line at +4.5 when it first came out, they would have a distinct advantage over those who waited closer to kick off and were stuck with +2.5. The opposite holds true for Carolina. Bettors that were quick to pull the trigger are now laying two more points than they would if they were patient and saw the line movement before making their move.
The team is now 6-1 since rookie Lamar Jackson, the former Heisman winner, took over as the starting quarterback. Jackson is only the fifth rookie quarterback in the Super Bowl era to win six of his team’s final seven games. Baltimore won at the Chargers in Week 16, 22-10. The Ravens defence completely dominated, holding L.A. to just 198 yards and forcing three turnovers. Our complete preview of this game can be read here.
This arrangement tells us a lot: which team is home (listed on bottom, in this case the Seattle Seahawks), which team is the underdog (listed with a plus sign next to their name, in this case the New England Patriots), we know which team is the favorite (listed with a minus sign next to their name, in this case the Seattle Seahawks), and we know the point spread (2.5 points).

The NFL spread (betting point spreads is also known as betting ‘sides’ since you are picking one side to win the game) acknowledges that not all teams are created equal. If they were, we wouldn’t need NFL point spreads at all – teams would be so evenly matched that every game was a toss-up (or a pick em in football parlance). Simply picking the winner would be enough of a challenge.