Outlook: While other players on the roster have more NFL experience, it's rookie running back T.J. Logan who is drawing interest from fantasy circles as a potential backup for David Johnson. The rookie rushed for 2,165 yards and 19 touchdowns over his four seasons at North Carolina in college. Those numbers aren't particularly impressive on the surface, but it's also true that he never took a full share of carries. He was also a solid pass catcher and showed impressive explosion when he had the ball in the open field.
Logan's skill set seems to indicate that he's the best option on the roster to be a change-of-pace back for Johnson, should the team opt to implement that strategy in 2017. They did not do so in 2016, so there's no clear path to significant playing time for Logan, or any other back on this roster, at the moment. Still, we've seen enough from the other backs on this roster to know that none of them really possess the ability to be game breaking fantasy options in the scenario that they'd be given the opportunity. Logan isn't built to be an every down back for an entire season, but he's not tiny either. At 5'9" and around 200 lbs, he should able to fill in for Johnson should that be needed for a short period of time. If Johnson were to be knocked out for the season, however, it would be surprising if Logan, or veteran Chris Johnson, would be immediately transitioned into a full time role as a workhorse back. Logan and Johnson are mostly handcuffs for DJ owners, but both could return some value if the Cardinals do end up giving Johnson some additional rest to sustain his health.