CBs for Week 4

I have A. Ball and Mike Jenkins (Dal vs Det) in a tackle heavy league. Should I be concerned about 2 CBs on the same team? Available on the wire are:

C. Vaughn (Den vs GB)
W. Gay (Pitt vs Hou)
K. Arrington (NE vs Oak)

What say you Guru?

thanks :)

I would keep Ball and Jenkins for now (even though neither are great options, but neither are those guys on the waiver wire).