Which RBs to play, Decisions,decisions

I have Chubb, Cook, Carson, But I had also picked up Justin Jackson, Damien Williams, and Chris Ivory. I am playing Chubb and Cook for sure. But who should I stick in the 3rd spot out of the 4 left?

This one is really tough. I would eliminate Damien Williams personally. Justin Jackson and Chris Carson are both looking at heavy workloads in good matchups. I guess I would lean Carson as we have actually seen him succeed in the NFL.