Identify the type of line you are looking at. All online sports books offer you the chance to have your lines in an "American" or "Money line" version. If I were you, I would use this as my standard. An "American" line uses either a + or - before a number to indicate odds. So a -120 and a +120 are two very different odds on a team… I will explain the differences shortly. Two other less common variations exist: decimal odds and fractional odds.
For those who are just starting to place sports wagers online, moneylines can be a bit confusing and overwhelming. They differ from point spreads, which are more concerned with the winner and by how much they win. With moneylines, the winning bet will be based on who wins and that is it. These types of bets are usually placed when betting on low-scoring games such as hockey or baseball, but they can also be an option with boxing and some mixed martial arts. The key to understanding moneyline betting is learning how to read the lines. Bettors will usually see a + and a – amount after the listed teams. The – indicates the favoured team. Let’s say there is a moneyline of +120 and -130. The -130 is the favoured team and will cost $130 in bets to collect $100 on a win. If punters choose to bet the underdog at +120, they will bet $100 and will win $120. Basically, one will have to wager more on the favoured team to come out ahead.

A Parlay is a wager which combines several legs in a wager where the winnings from each selection roll onto the next. For a Parlay to be successful, all individual legs in the Parlay need to be winning selections. In the event of a tie in one of your selections in a parlay, the parlay is reduced to the next lowest number of teams. For example, if you have a 4 team parlay and one of the selections is a tie (only on 2 way markets), the leg would be considered a "push". In this instance, the 4 team parlay would then become a 3 team parlay and would be settled at reduced odds to reflect a winning 3 team parlay.
In theory, sportsbooks don't care about the outcome of a game, although for those of you who bet on the Steelers (-5.5) last season versus the Chargers and saw a game winning TD  returned by S Troy Palumalu as the game expired reversed, thus negating a seven point victory and putting the final at 11-10, you might think otherwise, but this is how it's supposed to be.
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.
In the brackets after the last two games, you will see the odds associated with each of the bets. Let's say we made our earlier example bet of the Chargers -3 and the final score of the game was Chargers 21, Cowboys 14. Looking at this, we already know that we won our bet, but just how much money are we going to get paid? For this bet, we will get paid even money because that is what is posted in the parenthesis. This means that if we bet $100, we will profit $100 for winning our bet.
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.
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%.
A money line, used in baseball and hockey, takes the place of a point spread. Money line betting is simply wagering on the contest based on a given price rather than a point spread. The team wagered on has to win the game outright, regardless of the score. The minus sign (e.g.-130) always indicates the favorite and the amount you must bet to win $100. The plus sign (e.g.+120) always indicates the underdog and the amount you win for every $100 bet. Using this example, therefore, you would bet $130 to win $100 on the favorite, while for the underdog you would bet $100 to win $120.
It's also important to consider whether or not there's any correlation between the point spread and the betting total. If they are, a parlay wager is a good way to get maximum value. For example, a college football point spread +24.5 parlayed with under 48 points in the same game might be a great parlay bet. If the +24.5 team covers the point spread, then there's an increased chance that the game also goes under the posted total of 48.
The prop bets available are going to vary from game to game, and the number of options will increase during the playoffs and into the NBA Championships. The important thing you need to make sure you’re aware of is that not all prop bets are created equally. Some prop bets take a lot of skill to predict, some take some skill to predict, and some take absolutely no skill whatsoever and are just a complete guess.

As you may already be assuming, adjustments are made if you want to bet on the Razorbacks. The point spread for the Razorbacks would be set at +7. It will always be the exact opposite of the other team. As the negative sign represents the favorite, the plus sign here represents the underdog. If you were to bet on the Razorbacks, they can actually still lose, and you win your bet.
"Grand Salami" is where you bet on the total number of listed occurrences, such as total goals or run, Happening during a collection of events. All relative events must be completed for bets to stand except for the outcomes of which have been decided prior to the abandonment and could not possibly be changed regardless of future events, which will be settled according to the decided outcome.
One of the main reasons that sports bettors like to bet is the action and excitement of winning and losing. Many sports bettors would rather take the risk of winning or losing than having the option of pushing (a tie) on their bets. For this reason, many sportsbooks offer what are called no draw handicap match bets. These are bets on an individual match that are designed so that there is never going to be a tie. In the standard handicap bet examples we used above, you saw that all of the bet options were in whole numbers. This allows for there to be draws.
Score three is usually the one that confuses people. Remember, when betting on point spreads, the favorite has to win by more than the number of points they are projected to win by. The underdog can lose the game, and you can still win your bet as long as they don't lose by more points than they are spotted. In the above example, if you were to bet on the Chargers at +3, you can imagine that like you have three bonus points to play with. You can lose by one point or by two points and still win the bet. If you bet the Chargers at +3 and lose by three points, it is a tie.
If you want to predict what will happen when Team A meets Team B, your best stats to analyze are those generated in their most recent head-to-head matchups at the same venue. The habits of the betting public are fairly constant, so ATS results in general have a longer shelf life, but don’t bother going too far back in time. The 2009 New York Yankees are going to look a lot different than the 2008 Yankees or the 2000 Yankees. (Source: The Sports Bookie Blog)

Typically, if you’ve made a bet on sports in the past amongst friends or at the casino, you probably made a moneyline bet, and you didn’t even know it. “I bet you $10 the Broncos are going to win tonight.” That’s a moneyline bet. You may also hear the bet referred to as a to-win bet in some circles, but just know that they are referring to the same type of bet.
In general, the betting public tends to gravitate towards favorites when betting the games regardless of the actual pointspread. This is especially true with high-profile teams such as Dallas and Green Bay in the NFL and Golden State and Cleveland in the NBA. The sportsbooks are well aware of this phenomenon and often times they will adjust the betting spreads accordingly. This, in turn, actually adds some value to the underdog when you consider that a pointspread is nothing more than a handicapping tool that is designed to even out the match.
Point spreads are determined by football 'experts' to even the playing field between two teams. Normally one team will be favored to win over another team. These 'experts' determine the number of points that one team will beat another team by. For example, Chicago is favored to beat Minnesota by 10 points. On the web site it will appear like the following:
Single day matchups are wagers on the complete 18-holes for that day. Holes played as part of a completion from the previous day's round, and playoff holes are not included in Single Day matchups. The full 18 holes will be considered in determining the outcome of the bet even if they are played on consecutive days. If both members of the matchup do not complete the full 18 holes, all bets are "No Action". If both players end the 18 holes in a tie, the bet is considered a "No Action" wager.
They do this by manipulating the lines to entice action where they need it. If they have too much action coming in on one team, they will adjust the lines to pay out less for that team to deter more bets. At the same time, they will adjust the line for the other team to pay out more to entice more action on that side. This dance continues until the game starts to try and get the correct amount of money on each side of the contest.
Identify the favorite: Lines with a - before the number (i.e. -200) indicate the favorite. A -200 should be read as: "For every $200 wagered, I win $100." When there is a negative sign, the line should always be read with relation to 100. That does not mean you have to bet that much, it's just easiest to understand! When a + sign is present, just reverse the reading, always keeping reference to 100: 

Jeff Gordon has been reporting and writing since 1977. His most recent work has appeared on websites such as eHow, GolfLink, Ask Men, Open Sports, Fox Sports and MSN. He has previously written for publications such as "The Sporting News" and "The Hockey News." He graduated from the University of Missouri-Columbia School of Journalism in 1979 with a bachelor's degree.

Let’s say the sportsbook has a series of bets that are all +250. You think in reality that the bets should actually be +125 and that the bet is not as big of an underdog as the sportsbook thinks. This means that you think you deserve $125 for every $100 bet that wins but the sportsbook is going to pay $250. Even though you think that the bet is still supposed to lose, you should make this bet.

Although the examples from above are in $100 increments, you don’t actually have to bet those exact amounts. That’s just how the odds are set up so that everyone is on the same page. With a quick glance at the numbers, you can tell who is the favorite, who is the underdog and what type of payout you can expect on each. You’re free to bet $5, $500 or whatever amount fits your budget. If you want to find out the specific betting limits for each option, browse through the betting sites rating guide in order to find the sportsbook that better fits your minimum and maximum limits.
Reading sports betting lines becomes easier with practice and experience with different sporting events. What looks like a jumble of letters and numbers actually gives a lot of information in a tiny amount of space. Different sports have different types of wagers available, such as the run line in baseball or the puck line in hockey, both of which replace the money line found in our football example. The more experience you have watching and gambling on different sports, the faster you’ll be able to read betting lines.
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).
You may often notice that the spread is sometimes set at an even number such as 3, 6 , 10, etc. In this case if the favored team won by the exact amount set for the spread the bet would be pushed, and all bets would be returned. For example, if the Patriots were 3 point favorites and they won by a FG (3 points) than this would results in a push, meaning no matter which side you bet on you would get your money returned to you.
The general purpose of spread betting is to create an active market for both sides of a binary wager, even if the outcome of an event may appear prima facie to be biased towards one side or the other. In a sporting event a strong team may be matched up against a historically weaker team; almost every game has a favorite and an underdog. If the wager is simply "Will the favorite win?", more bets are likely to be made for the favorite, possibly to such an extent that there would be very few betters willing to take the underdog.
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