The spread on offer will refer to the betting firm’s prediction on the range of a final outcome for a particular occurrence in a sports event e.g. the total number of goals to be scored in a football match, the number of runs to be scored by a team in a cricket match or the number of lengths between the winner and second-placed finisher in a horse race.
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.
This is different from a moneyline, where payouts can vary greatly because there is not point spread that is installed. It is simply picking the winner straight up. Therefore, a bet on the favorite would not profit as high as it would betting the spread since no points are given. Payouts on the point spread are not always the same, but they do not vary like a moneyline.
A listed odd with a + sign in front of it, such as the +120 in our example above, shows us how much money you would win on a $100 bet. Using the +120 odds, it shows us that a $100 bet on that outcome would pay out $120 in profits. Again this can easily be converted into smaller or larger size bets. A $10 bet on +120 odds would pay out $12 in profits.
Many novice bettors fail to understand the impact of home advantage when wagering on sport events. When looking at the board for potential wagers, these bettors tend to get excited and bet on lots of superior teams favored on the road against weaker opponents. The betting market is so much more advanced than this, and for the most part point spreads are always going to be 50/50 propositions.
Bookmaker's interest - In order to guarantee a profit for the house, a bookie needs to create even action on both sides of a particular game. In a perfect world the bookie would have 50 percent of the handle come in on the underdog and 50 percent on the favorite. This ensures that the sports books are guaranteed a profit because of the 10 percent commission or "vigorish" charged on most sports wagers. This is why there is "movement" on the point spread. If one side on a game is being bet more heavily, the bookie must move the number in order to attract interest on the other side in order to balance action.

Essentially, a moneyline bet is a bet on which team is going to win the game. There is no point spread or other handicap for either team, so if you pick a team and it scores more points than the other team then you win. Obviously there has to be a catch, though, or the bet would be way too simple. The sportsbooks balance their risk by setting different prices on each team. You win a smaller amount than you bet if you pick the favorite, and you generally win more than you bet if you pick the underdog. The stronger the favorite the less you will win, and vice versa.
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]
Conversely, in most other countries financial spread betting income is considered taxable. For example, the Australian Tax Office issued a decision in March 2010 saying "Yes, the gains from financial spread betting are assessable income under section 6-5 or section 15-15 of the ITAA 1997".[6] Similarly, any losses on the spread betting contracts are deductible. This has resulted in a much lower interest in financial spread betting in those countries.

Proposition bets are wagers made on a very specific outcome of a match not related to the final score, usually of a statistical nature. Examples include predicting the number of goals a star player scores in an association football match, betting whether a player will run for a certain number of yards in an American football game, or wagering that a baseball player on one team will accumulate more hits than another player on the opposing team.
The point spread will list one team in the negative and the other in the positive. (Unless neither team is favored, then they will be listed as EVEN or PICK). The club posted in the negative with a minus sign is favored and so the bookies take points away from them, which means that team must win by at least a certain number of points to cover the spread. The underdog will have a plus sign and will cover if they win outright or lose by less than the posted number.
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