To show how this can be exploited, take a point spread of -8.5 at odds of -110. This is a 50/50 proposition. Let's assume you've purchased enough points to move the spread to -6.5 at odds of -150. Now, you'd win instead of lose 6.24% of the time they win by 8, and 6.59% of the time they win by 7. Add these together with the 50% from the original proposition, and we get 62.83%.
covering a spread - When a team surpasses the expectations of a point spread set by football experts. For instance, if a team is expected to win by 10 points, and they actually win by 11 or more, this is called 'covering' the point spread. If the team wins by nine or less, or they lose the game, this is called NOT 'covering' the point spread. If the team wins by exactly 10 points, this results in a push or tie.

A good rule of thumb with sports betting is that the sportsbook is going to put more time, effort, and resources into setting their lines on the sports and leagues that have the most action. This is a completely smart move on their part as it's where they stand to lose the most money if they make a mistake. What this means is that the smaller sports and leagues are much more likely to have bad lines or lines that don't respond as quickly to trends as they should. Regarding basketball, this means you may have more luck looking into college basketball or even the smaller European leagues. If you do choose to go this route, make sure that you do all of your homework and are not just jumping into a new league blind. College basketball and Euro league betting are NOT the same as NBA betting even though they are the same sport. This does not mean you can't bet the NBA and that you won't find great lines; it just means that the bad lines are more likely to be corrected quicker as the sharp bettors will jump all over them, and the sportsbook will adjust.
The two results above are the no-vig probabilities. If you're sharp, you'll notice that adding 68.57% and 31.43% up together will give you 100%. The extra 2.95% has been removed, so there's no more vig. We can now go to our odds converter and enter 68.57% into the implied probability field. This will give us moneyline odds of -218. If we enter 31.43%, we'll get moneyline odds of +218. The original moneyline market of the Celtics at -240 and the Grizzlies at +210 therefore has no-vig odds of the Celtics at -218 and the Grizzlies at +218.
The first number in the listing pertains to the order this game appears on a sportsbook’s board. The next NFL game would be listed as #103 for the road team and #104 for the home team. You can think of these numbers in the same way that each horse in a race has its own betting number. The next big takeaway from this listing is that the top team is always the road team (thus the odd number) and the bottom team is playing at home.
When the point spread was invented in Chicago by Charles McNeil the money line took a backseat. When two unevenly matched teams played, the playing field was leveled by having the favorite give points (for example Chicago Bears –7) while the underdog got points (Minnesota Vikings +7). No matter which team the bettor took the bettor would always risk $110 to win $100. The extra $10 needed to win $100 is called the juice or the vig, it is basically the house’s or the bookie’s take. It’s 10-percent of the bet so it would take $33 to return $30 and $440 to return $400 etc. (winning bettors get the vig back).
In sports like football and basketball, the moneyline is considered as the secondary option next to point spreads. Points spreads are the way that most people get their action in on basketball betting and football betting because the payouts are near doubling your money and it’s a fun way to handicap the game. Betting the moneyline in those sports is less popular because you might have some big mismatches and then it becomes too challenging to have faith in the underdog winning outright or too costly to bet the favorite.
Some people consider sports gambling a disease which is why it is outlawed everywhere in the United States besides Las Vegas. However, many Americans still bet on sports illegally with various overseas bookies. Because of this, many Americans believe sports gambling should be made legal throughout the United States because the country is missing out on millions of potential tax dollars by sports gamblers using overseas bookies.
This may sound confusing, but spread betting is one of the easiest forms of sports betting offered. It also offers better odds when betting on the favorite team and the normal odds are 10/11 or -110. When one chooses to bet on the underdog that team does not have to win, they just have to cover the spread. Spread betting is pretty simple and it allows punters to enjoy an exciting form of betting that can lead to some significant wins.

With all that being said, there is one situation where we'd suggest the moneyline wager is usually a better option than a point spread wager. This is when you like three point underdogs in an NFL game. Only a small percentage of NFL games are decided by three points or less, so if you think a three point underdog is going to cover then you might as well bet on them to win outright. This will generally give you a much better return.


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Sports betting has been around since 1000 B.C in China, where betting on animal fights was commonplace. In ancient Rome, one could wager on the Gladiatorial games. The idea of betting on sports is as old as organized sport itself. But up until the 1940s, bettors were fairly limited in what kind of bets they could make. The standard system of odds would allow bets on, for example, the 3-1 odds that the Steelers would beat the Browns.
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