It cannot be expressed enough the fact that baseball is all about momentum. When teams are playing well, they will continue to play well. The converse is true for a team if they are playing poorly.
As a result, it is very common for a team to go on long winning streaks but when they break out of the winning streak by losing a game, how do they historically perform?
Teams coming off a loss after having a 9+ game winning streak has gone 34-21, +10 Units and is undervalued by the spread by an average of 18 points! This means that the bookies should be adjusting the spread by about 18 points to compensate for the team