this is probably a better spot for this question than on the minor league threads.
Going into the year, at least BA had Espinosa as the better fielder and Desmond as the better arm. So far, it looks like Desmond can be a very good fielder on better diamonds and with a reliable stretch, scoop, and catch first baseman like Dunn (did I actually write that? I believe it). Can Espinosa hit well enough to be a regular at 2d? Would you move Desmond off of SS? Are they close enough that one may become trade bait?