Typically there are 4-5 oddsmakers assigned to make lines for each of the major sports (college and pro football and basketball; MLB, NHL, boxing and golf). Each oddmakers bring unique opinions, strengths and weaknesses into the process.
What Is the Line Trying to Accomplish?
Commonly, people are under the misconception that point spreads represent the oddmakers prediction of how many points the favorite will win the game by. This is not the case their intent is not to evenly split the ATS result between teams. But rather their goal is to attract equal betting on both team sides. In other words, they want to create a line that is attractive to people betting one way and also people betting the other way (known as dividing the action).
Dividing the action means the sportsbook is guaranteed a profit on the game because of the fee charged to the better (called juice).
How the Opening Line Is Made
Opening line is the first line created by the oddsmakers which is the sent out to all the sportsbooks. There is of course an entire method to the madness on how the opening line is created. It starts with each oddsmaker creating a line on each game...