His defense is solid, but could use more refining. He won defensive player of the year last year in part to all the preparation he puts in. The defense is not the reason he's still in AAA. I think the FO has a mental block against bringing him up due to his age, but not his maturity level.
Age ain't nuthin' but a number.
Silverman: Source: Red Sox are not close to deal w White Sox for Todd Frazier. And as of tonight, they are not close to deal for another third baseman.