My concern about Hairston, since he didn't get off very well, is that he won't get that much playing time and it might be tough for him to turn things around.
Yet, having watched him play last year, I have confidence that, if he's healthy and gets his chances he will produce.
I think the key with Hairston is confidence and patience. Right now, he seems a bit overanxious, swinging perhaps at too many bad pitches, or good pitches he can't handle. But I'll never be convinced last year was just luck. He hit the ball too solidly and consistently over a relatively long period to call it luck. Just my view, which most obviously don't share.
P.S. I know his lifetime stats.