Shelby Miller and Carlos Martinez are the two big Cardinals prospects. Miller will be top 10 and could sneak into the top 5 overall, and Martinez should be in the top 20, and possibly the top 15. They each project as a #1 SP down the line, Martinez having perhaps the best fastball among prospects in the minors. Two other guys in the system are Zach Cox, a 3B who is hitting rather well right now, and Tyrell Jenkings, a raw RHP with a ton of upside. I would probably rank the Cards system a notch above the Brewers based solely on those 4, and I'd assume BA/BP/PG/KLaw/etc would agree.