Defenseive Strategy Help

My opponent has LeSean McCoy so I picked up Chris Ivory. However someone else dropped Alex Collins. He’s probably going to pick up someone for when Shady is ruled out. Should I keep Ivory on my roster or try to make a claim for Alex Collins or Sammy Watkins. I want to keep his best option away from him while also rostering someone I can use.

I don’t think ivory is going to be that productive to hurt you. Maybe wait till the last minute then drop him and maybe he won’t notice. I like watkins over Collins. Panthers D is solid against RB. Going to be a low scoring game.