Baseball stats tell us what has happened in the past and cannot predict the future because conditions are 100% dynamic. Stats can tell us what will happen if conditions are static. How many times have we heard about a stud player having a "bad game"? Did the stats predict when he will have a bad game? Of course not.
Stats give us a general picture of a player's current situation, but I would not rely on them too much to predict the future.
This just in from the newswires: The Anti-Trust Division of the US Department of Justice has announced that whenever Sale take The Bump, it is unfair competition in violation of various federal and state laws. However, he is not being prosecuted because it is so ****in awesome to watch him do his craft.