D-Backs edge Astros

Baseball Betting Lines

09/04/2010 - Phoenix, AZ (Sportsbook Betting Lines) - Augie Ojeda's sacrifice fly in the bottom of the eighth delivered the winning run as Arizona downed Houston, 4-3, to start a three-game set.

Adam LaRoche went 2-for-4 with two runs batted in and Gerardo Parra added two hits and a run scored for the Diamondbacks, who have won four in a row and seven of their last eight games while outscoring their opponents 58-28 in the process.

Aaron Heilman (5-5) earned the win with a scoreless top of the eighth and Juan Gutierrez worked a scoreless ninth to preserve the win and earn his seventh save.

Wilton Lopez (5-1) suffered the loss after yielding the deciding run on one hit over one inning of work for the Astros, who had a three-game win streak snuffed out.

Ryan Roberts doubled off Lopez to open the decisive frame and advanced to third base on a Gerardo Parra groundout. Ojeda, pinch-hitting for Heilman, then lifted a fly ball deep enough to center field to chase home Roberts with the tie-breaking run which also ended Lopez's time on the hill.

Houston had evened the game at three when Angel Sanchez grounded into a double play with runners at the corners and nobody out in the seventh.

Stephen Drew singled to start the home first, advanced after a walk to Chris Young and scored when LaRoche followed with a double. However, Houston starter Brett Myers worked his way out of further trouble by getting Mark Reynolds to foul out, Miguel Montero to fly out to shallow right field and Brandon Allen to pop up.

Sanchez opened the fourth with a base hit and scored to tie the game on Jeff Keppinger's one-out single to left. Myers doubled to right with one out in the fifth and scored on a Sanchez two-out single to right to put the Astros in the lead for the first time.

Arizona reclaimed the lead in the fifth on consecutive run-scoring singles by Young and LaRoche.

Daniel Hudson delivered another fine start for Arizona but was not involved in the decision after allowing two runs on seven hits with one walk and six strikeouts.

Myers was charged with three runs on seven hits with three walks and four strikeouts in his six of innings, as he stretched his streak of lasting at least six frames in each of his 28 turns this season.

Game Notes

LaRoche's two RBI give him 89 on the season, the most for a D-Backs first baseman in a single season, surpassing Tony Clark's 87 in 2005...Drew went 1- for-3 and has hit safely in nine of his last 10 games during which he has 18 hits...Hudson has gone at least six innings in each of his seven starts since being acquired by the D-Backs on July 30...Arizona selected the contract of veteran left-hand pitcher Mike Hampton from Triple-A Reno prior to the game...Houston has lost eight of its last nine meetings with Arizona...Astros outfielder Hunter Pence went 2-for-4 and has a team-leading 43 multi-hit games.

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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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