To add on to what i said and keep this converation of "sharps" going..
Sharps are true professional gamblers, they get information from their connections within the industry before the public ever even sees it coming , whether it be about an injury or a scratch from a lineup, or even just an oddsmaker error. They put the big money in play that forces the books to adjust..
Like i said before it's not hard at all to see what games the sharps are pounding, you just need to get the percentages. I like to use sportsbookspy, they have every percentage of every game you need. You can get part of it for free over at pregame, and just that part is good enough, but if you want everything you have to pay for it but it's worth it.