Have Chris Johnson, Matt Forte, Shonn Greene and just picked up Kevin Smith. Would just pull Johnson and start Smith, but Johnson is coming up against the 2nd worst running defense this year. Greene coming of the rib injury but he is also playing a weak run defense in Buffalo and with Cutler out, I see Forte getting a ton of reps. So, do I keep the 3 (2 running backs and a flex) the same or do I find somewhere to put Smith while I can still get something out of him. Also have Calivin Johnson, and I dont want to rely too much on Detroit to get my points especially against GB, so I have already pulled Stafford and put Romo in. thoughts?