"Washington, a seventh-round pick this year, has already done a lot to impress the Lions’ coaching staff. Entering the team as a long-shot to make the roster, his impressive play over the preseason forced the Lions to cut veteran Stevan Ridley. Not only that, but he jumped Zenner on the depth chart, making him not only part of the 53-man roster, but on the 46-man active roster on game days. In his first career game, Washington scored his first NFL touchdown on a one-yard goal-line rush.
When Abdullah went down against the
Titans, Washington again met the task. The Lions trusted Washington with four carries and he delivered 31 yards, including an impressive 28-yard rush on a draw play.
But for Washington, being a running back can be about a lot more than just rushing the ball. It requires a deep knowledge of the offense, including knowing who to pick up in pass protection situations.
Matthew Stafford seems confident of his abilities though. “Everything we’ve given him he’s done a nice job of soaking up,” Stafford said on Wednesday."
Source
Over at their SB Nation blog site there are only a handful of guys even bringing up Zenner's name. Most are on the Dwayne train