Division rivals collide as Mariners visit A's

Baseball Betting Lines

09/06/2010 - (Sportsbook Betting Lines) - Second-year lefty Brett Anderson can pitch the Oakland Athletics a game closer to .500 and keep them an outside contender in the American League playoff race today, when the team hosts the Seattle Mariners for the first of three games at Oakland-Alameda County Coliseum.

The Athletics come in after taking two of three from the Los Angeles Angels of Anaheim over the weekend, though they lost by a 7-4 score on Sunday. Bobby Abreu drove in three runs and scored three times to lead the Angels.

Jeff Larish hit a two-run double for Oakland, which has dropped five of seven. A's starter Vin Mazzaro (6-8) was rocked in 4 1/3 innings, giving up five runs on six hits as the right-hander lost his sixth straight decision.

The Athletics are now two games below .500 at 67-69 and sit eight games behind the Texas Rangers in the chase for AL's West Division title. The Rangers, who lost slugging outfielder Josh Hamilton to injury over the weekend, begin a four-game series today in Toronto.

Anderson, a 22-year-old from Midland, Texas, was 3-2 on the season after a 4-3 defeat of the Kansas City Royals on Aug. 4 in Oakland. He's 0-4 in five starts since, however, including a six-inning stint en route to a 4-3 loss to the New York Yankees at Yankee Stadium on Wednesday.

He's pitched at least six innings in four of those five starts, allowing 34 hits and 14 runs in 28 innings.

The slump began against the Mariners on Aug. 10 in Seattle, when Anderson allowed five hits and a run in seven innings of a 2-1 loss.

He is 2-2 in six home starts in 2010.

Seattle counters with 27-year-old southpaw Jason Vargas, who'll seek his first win since Aug. 14.

The former second-round pick of the Florida Marlins defeated the Cleveland Indians to improve to a career-best 9-5 that day, but has lost three subsequent starts against the Yankees, Minnesota and the Angels.

Vargas picked up his initial win of 2010 against the Athletics after tossing six innings and allowing five hits and two runs while walking none and striking out six in Seattle on April 14.

He's 2-0 in three career games against Oakland with a 1.69 earned run average in 10 2/3 innings.

Seattle comes in off a winning effort on Sunday, when Russell Branyan homered and drove in two runs to back eight scoreless innings by Felix Hernandez as the Mariners topped Cleveland, 3-0, at Safeco Field.

Oakland has won five of six meetings with the Mariners held at the Coliseum this year, as well as seven of 12 overall matchups between the teams in 2010.

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Sportsbook Betting Lines

Who Makes the Sportsbook Betting Lines?

Las Vegas Sports Consultants (LVSC) is the world’s premier oddsmaking company and the most respected authority on making the lines. Mike Seba is a Senior Oddsmaker at LVSC and has been making lines for the last six years. 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). Each of these oddsmakers bring unique opinions, strengths and weaknesses to the process. 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. By necessity their approach is very research-oriented and concise, since with millions of dollars at risk there is little margin for error.

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

“The #1 thing for us is to make a line for each game that creates good two-way action. We do this by drawing from past experiences and applying them to current situations. People think it’s much more complicated, but it’s not. “

What are the Football Betting Lines Trying to Accomplish?

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. 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’).

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).

How the Opening Line Is Made

The opening line is the first line created by the oddsmakers, which is then sent out to sportsbooks. Of course there is an entire method to the madness on how the opening line is created. Seba explained that it all starts with each oddsmaker creating a line on each game based upon their own personal approach. This usually includes having up-to-date power ratings on each team.

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. The power ratings are adjusted after each game a team plays. Examples of non-game factors that would require an adjustment to a team's power rating are key player injuries and player trades.

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. 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.

Since the oddsmaker’s ultimate goal is equally dividing the sports betting action, public perception and sportsbook betting patterns must be taken into account. For example, the public might have heavy betting interest week after week on a popular college football betting team such as USC. 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.

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.

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. 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.

Why Sports Betting Lines Change

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. Reasons for such adjustments include:

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

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)

The purpose of these adjustments, like all line adjustments, is to more equally divide the betting action.

Once betting begins, sportsbooks can adjust the line at any time. In doing so they attempt to make more attractive the team that is getting less action. By moving the line, sportsbooks can influence how the public bets on a particular game.

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.

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. 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. Oddsmakers have to determine if any changes are necessary and send out an "adjusted line."

“The main objective is that our clients get equal action on both sides,” Seba said. “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). If we’ve done that, we’ve done our job.”

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