Need To Improve Washed Up Running Backs (Waiver Top Option)

have to fix a bad running back #2 situation

...such as Deangelo Williams VS. WASH, James Starks @ MINN + Ryan Grant @ MINN

if you were managing this RB#2 scenario would u drop any of those three for somebody like Demarco Murray or other handful of options from list below

Free Agent Running Backs Week 7 Projections

Murray, DeMarco RB DAL vs. STL
Choice, Tashard RB DAL vs. STL
Hardesty, Montario RB CLE vs. SEA
Tomlinson, LaDainian RB NYJ vs. SD
Carter, Delone RB IND @NO
Tate, Ben RB HOU @TEN
Williams, Ricky RB BAL @JAC
Snelling, Jason RB ATL @DET
Morris, Maurice RB DET vs. ATL