I paid attention to Palka in the field when I watched a game in Pawtucket a couple weeks ago, and he's not a butcher but still will be limited defensively. Half a step up from plodding, good arm but missed a cutoff man, that kind of thing. He has to continue with the big bat in order to make it in the majors, and that is always a risky proposition even with a good minor league resume, because he has nothing else to fall back upon. Coming up as a DH only type, if his manager decided his was Arcia level defense, would probably be beyond his capability at the plate. Still, he is someone to invest time and resources in. Could have a major league career. BTW, Thomas Field at age 29 is on no one's prospect list, but I'm here to say that, in the same game, watching him fail to even go after a ball up the third base line because he apparently thought it was foul (it was not), and making an unnecessary out as a baserunner, has me thoroughly on the find-someone-else bandwagon for third base emergency-callup-dude.