Here is one that I have no clue what to guess for his 2012 season. Colby Rasmus could hit anywhere from .200 to .325 and it wouldn't surprise me. I think, in the long run, he'll be a good player, but I am not sure if that will happen next year or not.
His career numbers are here.
Provided by Baseball-Reference.com: View Original Table
It is tough to figure out which is the real Colby. Bill James figures him to hit .255/.334/.446 with 18 home runs and 56 RBI in 137 games. I guessing a couple more homers, so something like .250/.325/.475 with 22 homers and 65 RBI in 140 games.
Give us your guess.