Based on the 2006 Memphis Redbirds season (and Jason Isringhausenย’s in St. Louis, for that matter), the thought of a lights-out closer in the Cardinals system might seem like so much fantasy talk. But St. Louis happens to have a pair of league-leading firemen in its farm system, prospects you may see at AutoZone Park merely a few months from now. Read about Mark Worrell and Mike Sillman here.