Is Allen Craig that bad?

I've been watching Allen Craig's name everyday in the box score, and can't figure out why he isn't getting a shot at third base. Is his defense that bad?

So far this spring he's hitting .500 and playing almost everyday. He's typically the guy that replaces Pujols at first base. He could be seeing time at third? His learning curve would be much less than Mather's at this point.

One reason I can see him being held back is the fact that's he's not on the 40-man roster. One easy remedy is dropping Royce Ring - with Dennys Reyes on the team, the neccesity to keep him isn't there.

Another reason is Craig played last season at Double A Springfield. While he didn't have an awful season, some considered it disappointing. The jump from Double A to the Majors isn't that uncommon, but normally the player lit up Double A.

My guess is Craig will be trade fodder. He's down the depth charts at third, and first base is spoken for. He spent some time in the outfield, but we all know that's pretty crowded too.