I have read on this board where it is sometimes good to go against a team that has won ATS for several games and also to bet on a team that has lost ATS for several games. I believe the reasoning is that when a team wins ATS several times that the public is more likely to bet on them. This causes the linesmakers to inflate the odds since they know the public will bet on this team at higher odds. That team is less likely to cover the spread.
The same is true for a team that loses ATS for several games. The public is more likely to bet against this team, causing linesmakers to change the odds on this team knowing that the public will bet against it. That team is more likely to cover the spread on a line that is more in their favor.
I wonder if this is really an effective way of betting however. This is related to my question in this forum where I ask, do linesmakers make lines solely based upon public opinion? Or would the linesmakers take into effect that part of the public is wise to such a trend?
If a linesmaker makes lines based solely on public opinion it would be quite simple to find that opinion and bet against it.