*Future wagers. While all sports wagers are by definition on future events, bets listed as "futures" generally have a long-term horizon measured in weeks or months; for example, a bet that a certain NFL team will win the Super Bowl for the upcoming season. Such a bet must be made before the season starts in September, and winning bets will not pay off until the conclusion of the Super Bowl in January or February (although many of the losing bets will be clear well before then and can be closed out by the book). Odds for such a bet generally are expressed in a ratio of units paid to unit wagered. The team wagered upon might be 50-1 to win the Super Bowl, which means that the bet will pay 50 times the amount wagered if the team does so. In general, most sports books will prefer this type of wager due to the low win-probability, and also the longer period of time in which the house holds the player's money while the bet is pending.*

What this spread means is that, for the purposes of wagering, the Chargers will have 3.5 points deducted from their final score. For a bet on them to be successful, they would therefore have to win by four points or more. The Colts, on the other hand, will have 3.5 points added to their final score. A bet on them would be successful if they won the game, or lost by 3 points or less.

#### That’s easy to understand because of the payouts. If a team is heavily favored, that means they’re perceived as having a better chance of winning. If that’s the case, then you would win less money betting on them. The opposite is true for the underdog: they’re deemed as having a smaller chance of winning, which means you would get a bigger payout if you bet on them (and they won).

*To understand what the "limit" means in sports betting, you need to think about the limit we follow every day in our life - the speed limit. Speed limits are set in place to ensure the safety of everyone driving on the road. If everyone does the same speed, the less likely it is for a crash to occur. If you go above the limit, you are putting others in danger, not only on the road in cars, but pedestrians as well. They are in place for a reason, which is to control the way people act. The same can be said with the limits set by a sportsbook. They are in place to reduce any potential damage the books may suffer and keep bettors under their control. Read More >>*

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.

__Also known as NFL OVER/UNDER betting, the total is the number set by sportsbooks that estimates the total number of points scored by both teams combined. Bettors then must predict whether there will be more or fewer points than the NFL “total.” If you bet the 37.5 UNDER, you are hoping for a defensive battle and predicting the offenses to struggle. If you bet the 37.5 OVER, you are hoping this will be a high-scoring game.__

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.