If you place wagers on US sports, then chances are high that you've heard of point spreads. Here's how they work; if a game has Patriots -9.0 and Vikings +9.0, the Patriots are 9.0 point favorites and the Vikings are 9.0 point underdogs. Unless otherwise stated, no matter which team you bet on, you'll be required to risk $1.10 for each $1.00 you want to win. For Patriots bettors to prevail, they need their team to win by 10 or more points. A 9-point Patriot victory would be a push (a tie). For Vikings bettors to take home the victory, they need to either win the game or lose by less than 9 points.
Most online sportsbooks will list their odds in what is called “American Odds”. There are a couple different versions of sports betting odds, but these American Odds are the most common odds used. Reading and understanding sports betting odds can bet a little confusing to beginners, so we have provided an example below using two NFL football teams:

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.
Rotation numbers are standard from sportsbook to sportsbook. The number becomes a way to refer to the game and team without mentioning the teams name. It’s a sort of shorthand. Also, the rotation number allows each book to list the games in the same order—numerically. It is, in essence, a way to keep all of the games that are posted each day and throughout the week organized. That makes it easy for the bettor and the bookie.
For UK spread betting firms, any final outcome that finishes in the middle of the spread will result in profits from both sides of the book as both buyers and sellers will have ended up making unit point losses. So in the example above, if the cricket team ended up scoring 345 runs both buyers at 350 and sellers at 340 would have ended up with losses of five unit points multiplied by their stake.
As already mentioned, there have been sports bets since the first sports events. There is evidence that bets were placed on the first Olympic Games in ancient Greece. The bet was placed on the winner of a race or the winner in wrestling. The more matches there were to the games, the more bets there were. The Romans made bets on almost everything that was possible. Among them also the bloody gladiator fights and chariot races. From the very beginning, fraud and manipulation were a means of winning a competition. The Roman Emperor Nero even bribed so much at the Olympic Games in his own country that he won in six different disciplines. One of them was the car race and that although he fell off the car, which normally leads to disqualification. The Olympic Games were then discontinued, but not the sports betting. In the last century there was again a time when sport, especially boxing and horse racing, fell into the hands of criminal gangs. The image of sports betting had to suffer a lot from this bad influence, also because Hollywood used the topic as the basis for many films, as a result of which perception in society drifted further into the negative.
The moneyline works differently. With this type of wager whichever team wins outright pays off. There is no spread. How does the line work? The favorite is listed with a minus sign and a number. That number is the amount of cash that must be bet in order to win $100. The underdog is posted with a plus sign in front of a number. The number is how much a sports bettor wins on a $100 wager.
A point spread, or “the line,” is a number set by oddsmakers to give an advantage to one team and a disadvantage to another team based on the margin of victory or defeat for the two teams. The favorite team is giving up points for purposes of the wager, meaning they not only have to win, but they have to win by X amount of points. The underdog team is getting points for purposes of the wager, meaning they can still lose the game, but they must lose by less than X amount of points.
For example, in a cricket match a sports spread betting firm may list the spread of a team’s predicted runs at 340 – 350. The gambler can elect to ‘buy’ at 350 if they think the team will score more than 350 runs in total, or sell at 340 if they think the team will score less than 340. If the gambler elects to buy at 350 and the team scores 400 runs in total, the gambler will have won 50 unit points multiplied by their initial stake. But if the team only scores 300 runs then the gambler will have lost 50 unit points multiplied by their initial stake.
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.
As always, beware of sites offering paid or free NFL betting picks in connection with a varying unit betting system. If you are using their pro football betting picks to gamble on NFL football games, you might consider that some of these sites are providing money tips which are likely to drain your NFL sportsbook account. Earning gambling profits long term takes discipline to know there is always another game to bet on. Most free sports pick sites don't understand that it requires more than winning football predictions to earn a living betting on sports. So for anyone living in an area where NFL gambling is legal, keep in mind that relying on "bet the house" free NFL picks could seriously reduce your NFL betting success.
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