Zenner rushed three times for 12 yards and caught his only target for 22 yards in the Lions' 17-14 loss to the Bears in Week 4.
Zenner only entered the game after rookie Dwayne Washington left with an ankle injury, marking Zenner's first offensive snaps of the season. If Washington is unable to play in Week 5, Zenner could conceivably inherit a sizable workload behind starting running back Theo Riddick. If Washington is able to play, though, Zenner will likely be recast into fantasy irrelevancy.