start coghlan at 2b, castro at ss. bat coghlan 2nd. let him bat once in the bottom of the 1st, then take him out, put baez in at ss, slide castro to 2nd. that gets coghlan the one ab he would probably get if he doesn't start, but ensures that it comes against a guy he hits well vs. the plethora of guys out of the cardinals' pen that he doesn't match up well against.