Cunningham, Mason real threats to Stacy?

After we saw Benny Cunningham start ahead of Zac Stacy in the St. Louis Rams' regular-season dress rehearsal last weekend, I noted that it appeared that Stacy still was locked into the lead-back role for the Rams. However, I also noted that, "Time will tell whether Cunningham can eat into Stacy's workload this season, but it's something to keep an eye on."