When you see the clip that Parker included, how can anyone even dispute his defensive chops? For a third baseman, he's really the total package. I am in agreement with others, including Terry Ryan, that the errors are not even a concern at this point. It is interesting to ponder though. Why do we make mistakes? Seth, you attribute it here to occasional lapses in concentration. I suppose that's certainly possible. But consider this: a hundred thousand times you stop at a red light, but one time you blow through it. Were you concentrating in that moment, no; but were you really concentrating any more during the hundred thousand other times? I am a carpenter, and say I make a hundred thousand accurate measurements in month, but once in a while I inch trick a measurement- I don't think I am concentrating any less in the instance that I make the mistake. Further, it's the kind of mistake I made much more frequently when I was less experienced- even though I was probably concentrating harder on that type of task than I do now. My point here isn't necessarily to say that Sano's proclivity for defensive mistakes are not due a lack of concentration (who can know what's another's mind at any given time?). My point is to suggest that it is rather (or additionally) lack of experience. Maybe even as simple as muscle memory. Even on plays that appear routine, there must be infinite possibility for subtle differences. It would take countless in-game repetition to become automatic. Sano has only been playing third for a couple of seasons, and the difference between third and short is significant. I will say, as a middle infielder, I wanted nothing to do with third base. It's weird over there. Seth, as you say he is an athlete, he has the hands, he has the arm. He's going to be a third baseman. In my opinion, his bat is ready now. I don't think that what happens with Sano is dependent at all on Trevor Plouffe. Plouffe will be, what, 29 this summer? He's playing really well, as he should, being in his prime. Do we have reason to project continued improvement and increased production from him? Perhaps? I don't know, but it seems to me most players begin trending downward once they reach their thirties. A down-trending Joe Mauer is palatable, and certainly Torii Hunter seems to have bucked the trend altogether, but a down-trending Trevor Plouffe with a lurking Miguel Angel... no way.