Given how much he was touted during the preseason, you’d think Shelby Miller would’ve already surfaced in St. Louis after injuries to big league starters Chris Carpenter and Jaime Garcia.  But a poor spring training followed by a brutal first half in the Pacific Coast League forced the Cardinals to turn to Lance Lynn and Joe Kelly instead.  Whatever was bothering Miller during the first four months of 2012 — mechanics, command, velocity… all of the above — whatever it was, he seems to have worked through it.  In 40.2 IP over his last seven outings with Triple-A Memphis, he’s posted a 42/4 K/BB along with a 3.32 ERA and a 0.96 WHIP.  Miller is once again commanding his mid-90s fastball and he truly looks to be back on track as an elite prospect.  With the Cardinals welcoming back Jaime Garcia to their rotation today, however, it seems unlikely that we’ll see him pitch in the bigs this year.  Still, at just 21-years-old, Miller’s ceiling remains enormous.  He should help in all formats next year.