Sports spread betting began in the United Kingdom in the late 1980s to offer an alternative form of sports wagering to traditional fixed odds, or fixed-risk, betting. With fixed odds betting, a gambler places a fixed-risk stake on stated fractional or decimal odds on the outcome of a sporting event that would give a known return for that outcome occurring or a known loss if that outcome doesn’t occur (the initial stake). With sports spread betting, gamblers are instead betting on whether a specified outcome in a sports event will end up being above or below a ‘spread’ offered by a sports spread betting firm, with profits or losses determined by how much above or below the spread the final outcome finishes at.
Another thing to consider is popular winning margins, which are particularly applicable to football. Consider that many tight games may finish with either a three point or a seven point margin. If the point spread is around either of these marks, make every attempt to be the right side. For example, if you were to back a team that is either 2.5 or 3 point favorites, you’d want to back them at the 2.5 mark, as if they were to win by 3 you’d win as opposed to a push.

A spread is a range of outcomes and the bet is whether the outcome will be above or below the spread. Spread betting has been a major growth market in the UK in recent years, with the number of gamblers heading towards one million.[1] Financial spread betting (see below) can carry a high level of risk if there is no "stop".[2] In the UK, spread betting is regulated by the Financial Conduct Authority rather than the Gambling Commission.[3]
The favorite team or player on the moneyline is the team that’s expected to win. This side of the bet usually listed with a minus (-) sign. The underdog team or player on the moneyline is the team that’s expected to lose. This side of the moneyline is usually listed with a plus (+) sign. These signs signify how either side of the wager will pay. The minus side will pay less than original wager while the plus side will pay more than the original wager.
Money line bets are on offer on all major sports. In the NFL, baseball, the NBA and the NHL, the money line traditionally goes alongside the point spread bets – in many cases being the least popular, especially in football and basketball. In many sports there is no point spread, motor sport being a good example, so in a sport like this, the money line is the only way to bet on the outright winner. Sports with small margins of victory are also popular money line wagers – soccer being an example, where point spreads are possible, but because of the lack of goals, the money line wager is preferable (the same can apply to baseball and hockey – although puck lines and run lines are a way for the gambler to enjoy point spread betting in these).
You should already know that the Eagles are the favorite to win and that you should expect less than even money on a correct pick here. You should also know that the Falcons are the favorite, and you should expect better than even money on a correct pick here. Having this in mind every time before you start your calculations will protect you from making a mistake and calculating the completely wrong direction.

Now, just to point out, the fractional odds and the moneyline/American odds give us our profit. The decimal odds give us our full payout which includes the return of our original bet. You are still getting your original bet back with the moneyline/American and decimal odds, it’s just not reflected in that calculation. If you want to see your full payout (basically how much money they should hand you), simply add your original bet amount to your profit number.
All of this is exactly the same for betting on Southhampton except you use the spreads and odds payouts that are underneath their team. You can also bet on the tie in a lot of sports, especially soccer. In the above example, the spread points would be added to Southhampton for calculations. This means that if you bet +3, you would need Southhampton to lose by exactly three goals.
With some betting sites odds, certain games are priced differently than risking $1.10 to win $1.00 (which is called -110 odds). For example, you might see the Giants priced at -105 and +7 in a game against the Jets. Now, you only have to risk $1.05 to win $1.00. This is obviously better odds, but it's very likely that they will lose by exactly seven to give you a push. Taking -110 and +7.5 with an alternative bookmaker is actually the better bet.
If you’d prefer to simplify things and only bet on whether a team wins or not, moneyline bets are going to be more of your style. A moneyline bet is a wager on which team wins the game. If the team you bet on wins, you win. If they lose, you lose. As we’ve stated earlier, the sportsbooks must do something to ensure they get as close to an even amount of money on both sides of a bet. With spread bets, they alter the number of points a team must win or lose by.
If the team is an underdog, then the moneyline number represents exactly how much you would get paid in profit for a correct pick. So if we were to bet $100 on the Boston Celtics and won, we would get paid $145 in profit. Seems easy enough, but you may already be asking what happens if you don’t want to bet in increments of $100. This is totally fine and still straight forward to figure out.
The most common NFL spreads are usually set between about 2.5-10.5 points, but you will also almost always have games each week with spreads lower than 2.5 and higher than 10.5. In the event that the oddsmakers feel the game doesn’t need a spread, it would be set at 0 or what some call a pick’em (both teams are given even odds to win for this type of bet).
The "Total Points", also known as Goals or Runs, is a 2 selection odds based on the total number of points scored in a game or event by the competitors. The "Total" is set at a specific line with outcomes listed as either Over or Under the listed amount. As with Point Spread/Handicap betting, in those circumstances where the result of the game or event Total point scored is exactly equal to the betting line, then all bets on this offer will be declared void. “Totals” can also be set on any number of predefined occurrences (e.g. goals, points, corners, rebounds, penalty minutes, etc.).
In most cases, the favorite will be the team with a negative moneyline (in some cases both teams can have a negative moneyline if they are both closely matched). A line of -160 means that you would have to bet $160 to win your base amount of $100. A team with a moneyline of -130 wouldn't be favored nearly as strongly as a team with a moneyline of -330.

We mentioned we would touch on the -3500 bet in this section. If you calculate the implied probability of -3500, you see that it is 97.2%. This means that the bet will have to hit 97.2% of the time for you to break even. Now, if you think that the bet is actually 100%, then it might be a smart bet to make. You’re still going to have to put up a lot of money to see any real sort of profit, which might not be desirable based on your personal preferences.

Armed with the knowledge of how to remove vig, it's now possible to prevent yourself from making the same mistakes that the majority of bettors make. Most bettors understand the importance of line shopping (i.e. comparing the lines and odds at different bookmakers and betting sites). However, if they fail to also understand how moneylines and vig work, then they're probably going to make wagers where they think there's positive expected value (+EV), even though there's not.
Bets on “Winner of Point”, “Scorer of Goal" and similar offers refer to the participant winning the listed occurrence. For the settlement of these offers, no reference to events happening prior to the listed occurrence will be taken into consideration. Should the listed event not be won within the stipulated time frame, all bets will be declared void, unless otherwise stated.
Notice that point spreads adjust the score for the favorite team. This is easiest to see with an example: If the New York Knicks are playing the Boston Celtics, and Boston is favored to win by a 4-point spread, then a bet on Boston only pays out if Boston wins by more than 4 points. A bet on New York pays out if New York wins or if they lose by less than 4 points.
Especially in major tournaments, some sports books offer odds on unusual golf propositions, such as the over/under on the winning score, the over/under on the lowest round by any golfer or the over/under on the finishing position by a particular golfer. For example, the over/under on Woods' finishing position may be 3 1/2. If he finishes first, second or third in the tournament, the "under" wins; if he finishes fourth or worse, the "over" tickets cash.