How the Sports Betting Line is Made by RJ Bell

Seba explained that it all starts with each oddsmaker creating a line on each game based upon their own personal approach. Reasons for such adjustments include:

Once a game’s power rating based pointspread is determined, the oddsmaker will make adjustments to that line after considering each team’s most recent games played and previous games played against that opponent.

How the Opening Line Is Made

For example, if the pointspread on a game is 7 and most of the money is coming in on the underdog (taking the +7), sportsbooks will then move the number down to 6 ½ to try and attract money on the favorite. If we’ve done that, we’ve done our job.”

The opening line is the first line created by the oddsmakers, which is then sent out to sportsbooks. This usually includes having up-to-date power ratings on each team. What Is the Line Trying to Accomplish?

The last step in the line-making process for each oddsmaker is taking one final look to determine whether or not the line “feels right.” This is where common sense and past experience with how games are bet enters into the picture. Each of these oddsmakers bring unique opinions, strengths and weaknesses to the process. “We’re not trying to pick the team that covers the spread, we’re trying to make it a coin flip, a tough decision (for the bettor).

Once betting begins, sportsbooks can adjust the line at any time. Examples of non-game factors that would require an adjustment to a team’s power rating are key player injuries and player trades. People think it’s much more complicated, but it’s not.”

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Once the opening line is released by LVSC, the individual sportsbooks decide if they want to make any adjustments before offering it to the public. The power ratings are adjusted after each game a team plays. Also, adjustments are made after reading each team’s local newspapers to get a sense of what the coaches & players are thinking going into the game.

The purpose of these adjustments, like all line adjustments, is to more equally divide the betting action. Of course there is an entire method to the madness on how the opening line is created. We do this by drawing from past experiences and applying them to current situations. For example, the public might have heavy betting interest week after week on a popular college football team such as USC. Of the 4-5 oddsmakers, generally the 2 most respected opinions are weighed more heavily by the Odds Director before he decides on the final line.

Individual books having players who consistently bet with certain tendencies (such as an extreme bias toward favorites or toward a certain popular team like USC)

A round-table discussion among the 4-5 oddsmakers involved in making the line for each sport is then conducted and a consensus line is decided upon by the Odds Director before it is released to the sportsbooks.

Moving the line is the oddsmaker’s effort to balance betting action, and often times such moves can have a major impact on a bettor’s decision.

Oddsmakers can also change the line depending on various event-related factors such as player injuries or weather. In our extended interview, Seba explained that there are 4-5 oddsmakers assigned to make lines for each of the major sports (pro & college football and basketball; MLB, NHL, boxing, golf).

There is a common misconception that point spreads represent the oddsmakers’ prediction of how many points the favorite will win by. That is not the case at all – their intent is NOT to evenly split the ATS result between the teams; rather, their goal is to attract equal betting action on both sides.

“The #1 thing for us is to make a line for each game that creates good two-way action. .

“You either have a passion for it or you don’t,” Seba said.

“The main objective is that our clients get equal action on both sides,” Seba said. Mike Seba is a Senior Oddsmaker at LVSC and has been making lines for the last six years. Oddsmakers have to determine if any changes are necessary and send out an “adjusted line.”

Las Vegas Sports Consultants (LVSC) is the world’s premier oddsmaking company and the most respected authority on making the lines. By necessity their approach is very research-oriented and concise, since with millions of dollars at risk there is little margin for error. Stated another way, they want to create a line that half the people find appealing to bet one way while the other half find it appealing to bet the other way (known as ‘dividing the action’).

Experts working for the individual books having a strong opinion on the game

Why the Line Changes

Power ratings are the oddsmaker’s value of each team and are used as a guide to calculate a “preliminary” pointspread on an upcoming game. Obviously, if the line comes out a week ahead of the event (which is the case in football), there is much that could happen during the week leading up to the event that could affect the line. If an oddsmaker comes up with a preliminary line of USC -7, then an adjustment up to -7.5 or -8 would be made in response to the public’s expected USC bias.

RJ Bell

© 2006


Oddsmakers at LVSC are professional sports junkies who love what they do and would probably do it for nothing if you asked them, but they do get paid for it. In doing so they attempt to make more attractive the team that is getting less action.

Since the oddsmaker’s ultimate goal is equally dividing the betting action, public perception and betting patterns must be taken into account.

Divided action means the sportsbook is guaranteed a profit on the game because of the fee charged to the bettor (called juice or vig – typically $11 bet to win $10). By moving the line, sportsbooks can influence how the public bets on a particular game

Football and Golf Betting

Some other variables, such as the weather conditions, the team morale, players’ personal life events or recent injured players are also taken into account when setting the lines.

In football for example there are many leagues in which you can decide to bet. Therefore, before rushing directly into placing a random bet, the first thing you should do is to get acquainted with the meaning of an odd and the three types of lines used in betting: fractional, decimal and American. The highest Conference betting odds can go from 6 to 261 for the participating teams.

There are three types of odds: decimal, fractional and American. They are also referred to as lines and they are set by bookmakers. Only knowledge will transform you from an idle better to a winner. This type of odds is also the most popular and it is offered by many bookmakers. Their names describe the way the odds are written by the bookies. Only in England there are 8 different leagues. In football, there are many leagues in which you can place a bet. Everything becomes much easier once you know the basics. After all, the reputation of a bookie stands in its ability to set the odds accurately. Fractional odds will say how much profit will be gained by the punter from one unit. This statistic process is a matter of intense research and years of experience. In UK however, the most commonly used type of odds are the decimal ones. Before figuring out the mathematical likelihood of defeat, victory or draw of a sports team, the odds makers are considering a wide range of variables. For Conference betting for example you will most probably receive the odds expressed in fractions. No matter if it is Championship, Premier League, FA Cup, League 1, League 2, Capital One Cup, Community Shield or Conference betting, it is important for you to know how to read the odds and find the bookie that provides the best lines available.

. Of course, one of the most important is the team’s performance during this season, as well as in past sessions. Golf betting can work with decimal odds as well. Decimal odds are usually stating exactly how much money will be gained by a punter from betting one unit. American odds tell the positive or negative outcome of a bet at a 100 unit stake.

Odds are an interpretation of the chance that a certain outcome will take place during an event. The home field advantage can also be influencing the odds. Golf betting is completely different from football betting for example. The difference from this kind of odds and the decimal ones stands in the meaning expressed by the odds. Every sport has a particular betting system.

It is critical to understand betting odds if you want to play them correctly and become a real sports investor

Casino-Gaming :: Roulette System |

A few of the common roulette myths that should be ignored are as follows:

R-Bet Winning Roulette Software – A large number of customers are satisfied with this roulette system. However, it is one of the most common roulette myths that are widely rumored. As a result, the players have started believing in myths which supposedly affect their chances to make profits at roulette. European wheel has 37 slots and not 38, which means the house advantage will be only 2.70%, whereas on American wheel the house advantage would be 5.25% on every bet. The rules, the odds and the house-edge are same for both the European wheel and American wheel. The truth is that, the odds remain 50%-50% and it will be similar even if the ball would fall on red 30 times.. These numbers start from the 0 (zero) and end with 36 or 37. It is basically a particular type of table game and a large number of players can play the game at a time. Roulette basically consists of a spinning wheel and a series of number. It is said that over time many roulette players have found that if the ball lands 10 times consecutively on red, there is a high chance that the ball will land on black in the next turn. It is true that the European wheel is the best for playing, because comparing with the American wheel the odds of success for a player in the former one are better. According to the users, these roulette systems are partly effective. This is also a wrong concept. As 2 distinct kinds of wheels are available at the casinos, the last number depends on which kind of the wheel it is. Some of the reputed roulette systems are listed below:

All roulette wheels are same: Many roulette players around the world heartily believe that, the roulette wheel is not of 2 types. The R-Bet roulette software has proved its capability and credibility.

The Sure Roulette Method – This particular roulette system is one of the most popular and oldest systems around. Due to the rising popularity of the roulette, various myths are being associated with it. The players do not need to be skilled enough to play roulette. The European wheel has numbers from 0 to 36. With the help of this roulette system, you can make substantial profits for several times at the roulette table. It is known as one of the simplest as well as most exciting games found in the casinos worldwide. Roulette is completely a game of chance. This is absolutely wrong. On the other hand, the wheel consisting of the numbers from 0 to 37 along with an extra 0 is the American wheel. The system is described in an e-book, which is good to read, but the system lacks some finer tweaking, to make it as profitable as other gambling systems available on the net.

Though roulette is a game of chance, several fake roulette softwares, claiming the sure-shot success in the game are found in the market today. So it is better to get the odds in your favor from the very beginning, by playing on the European wheels.

Every roulette wheel spin is not random: It is a common belief that, in roulette one spin invariably affects its consecutive spins