Arizona Cardinals Running Back Depth Chart

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Dec 7, 2014; Glendale, AZ, USA; Arizona Cardinals running back Kerwynn Williams (33) runs the ball against the Kansas City Chiefs at University of Phoenix Stadium. The Cardinals defeated the Chiefs 17-14. Mandatory Credit: Mark J. Rebilas-USA TODAY Sports

5. Kerwynn Williams:

He came out of nowhere; Kerwynn Williams shocked not only the Cardinals but also the league.

In only five games on the active roster, Williams rushed for 246 yards. His best game came against Kansas City. He rushed for exactly 100 yards, but was held out of the end zone. The following game against the Rams he rushed for 75 yards.

Williams is more than likely going to have to compete for his job, and his two big games may not be enough to keep him with the Cardinals.

It will be up to the coaches to decide if they want to keep four running backs, and if so Williams will be the fourth back.