Also, some bench players will come out fired up, knowing this is there chance to make an impression. Also, injuries are usually a good tame to get a good value bet, since the public generally overreacts to them and tends to tilt the scale. Knowing a team will tell you if it is a warm weather team, which has trouble in freezing conditions. Similarly, rain can lower the score of a football game since it usually forces teams to run the ball. Also, pay attention to the stadium.
Many arenas have their own wind and noise conditions, as well as other factors.
For example, in baseball, it is a rare game when the score is low in Colorado. For example, if a team has clinched a playoff spot and is going up against the worst team, it its all. Likewise, a team may be in spot to knock a team out of the playoff. Or, it may want to revenge a bad loss earlier in the season. Rivalries also push many of the statistics out the window.