Say the Bears are a six-point favorite over the Lions and the total is 42. To bet the Bears, you must "lay the points," meaning they must win by seven or more to cover and give you the win. Betting the underdog Lions, you are "taking" six points, and they can lose by five or fewer, or win the game outright, and you have a winning bet. If the Bears win by exactly six, both sides "push" and all bets are returned. It's also a push if the final score equals 42, otherwise the over or under will win.

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.

Identify the type of line you are looking at. All online sports books offer you the chance to have your lines in an "American" or "Money line" version. If I were you, I would use this as my standard. An "American" line uses either a + or - before a number to indicate odds. So a -120 and a +120 are two very different odds on a team… I will explain the differences shortly. Two other less common variations exist: decimal odds and fractional odds.
One way to make money from sports betting is to open an account at an online betting site and take advantage of their sign up bonus. This gives you extra money to wager with, and since point spreads are so straightforward, it can be relatively easy to meet the associated wagering requirements and still come out ahead. Repeating this process at multiple betting sites will maximize your potential returns! We just ask that you please stick with reputable sites, like any of the ones that we recommend.

For starters, you will need somewhere to place bets.  If you are in Vegas, great!  You can bet at one of the sportsbooks in their casinos.  As more and more states pass laws to legalize sports betting, you will also be able to place wagers at local casinos in your area.  You could also find a local bookie to bet through, but we recommend betting online.
Identify the favorite. Lines with a - before the number (i.e. -200) indicate the favorite. A -200 should be read as: "For every $200 wagered, I win $100." When there is a negative sign, the line should always be read with relation to 100. That does not mean you have to bet that much, it's just easiest to understand! When a + sign is present, just reverse the reading, always keeping reference to 100:
We already mentioned how using multiple betting sites allows you to take advantage of multiple bonus offers. That's not the only benefit either. Since point spreads vary between sites, one of the best ways to beat these wagers is to compare the different spreads in order to find which one is the most favorable. This doesn't take nearly as long as you might think, and it will make a huge difference to your bottom line over time.

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.
If the bookmaker was only confident enough to give Seattle a field goal’s lead on the Patriots, it was clearly going to be a tight game. Oddsmakers aren’t often that wrong about flagship games like the Super Bowl. All things being equal, it’s likely the betting public would have taken the Seahawks to win the game and have been done with it. But throw in the point spread that gave the Patriots 2.5 points, and the proposition seems more equal.
The Cronje Affair was an India-South Africa Cricket match fixing scandal that went public in 2000.[57] It began in 1996 when the-then captain of the South African national cricket team, Hansie Cronje, was convinced by Mukesh "John" Gupta, an Indian bookmaker, to throw a match during a Test in Kanpur, India. The scheme was discovered when Delhi police recorded illegal dealings between Indian bookmaker Sanjay Chawla and Cronje. According to the Telegraph in 2010, Cronje was paid off a total of £65,000 from Gupta.[58]
Money Line: More common in baseball and hockey, pro football moneylines are growing in popularity. There is no spread, so your team just needs to win the game, not win by a certain number of points. The negative value means a favorite (-190) and a positive one indicates an underdog (+170). Picture the number 100 sitting in between these two values. Example: if you want to pick a -190 favorite, you must risk $190 in order to win $100. To back a +170 underdog, you put up $100 and win $170 if the dog wins. In some cases, betting moneylines is actually better value and can provide a bigger profit for less risk.