Ziggy Ansah and Stephon Tuitt

What happened to them in week 6?  Did they miss any time w/ injury?  Ziggy put up nothing, and Tuitt 1 tackle.  Should I be worried going into Week 7?

Other options are Sheldon Richardson and Everson Griffen in tackle heavy league.

hard call,  would take Sheldon and Tuitt , Sheldon has actually outperformed him in fantasy the last 2 years.... Maybe keep 3 or trade Ansah if possible since his trade value is most likely higher than Tuitt

As you may know Tuitt is OUT for week 7. I cant find any player news on him to know what's wrong.
I'm starting a new post on Tuitt and possible replacements. I have Ansah as well. Think it was just one of those games. We'll see. Hope it helps.