Waiver Wire Advice Backup RB

10 Team, full PPR. Zeke owner, also Pollard owner. With Zeke signing I was wondering if I needed to hold onto Pollard or if I should hold for a few weeks. Other RBs I could pick up off waivers include Damien Harris, Alexander Mattison, and Justice Hill. Rest of my roster is below

RB: Zeke, Carson, D Montgomery, Sony, Pollard, Justin Jackson

WR: Thomas, Juju, Godwin, Samuel, Pettis, Gallup

I’m personally leaning towards Harris or Mattison since they are behind guys who are more injury prone

I would pick up Mattison or Hill.