They announced running back Kerwynn Williams was promoted to the 53-man roster from the practice squad and, to make room for Williams, they released defensive tackle Bruce Gaston, whom they had signed off the Miami Dolphins practice squad at the end of September.
Williams (5-8, 198) has been on the Cardinals practice squad since signing with the team on September 18. He spent the preseason with the Chargers before he was released on August 25.
Williams was a seventh round selection (230th overall) by the Colts in the 2013 NFL Draft out of Utah State. He played in one game with Indianapolis and was inactive for one other contest before spending three weeks on the Colts practice squad last year. He was then signed by the Chargers practice squad where he spent the final 13 weeks of his rookie season. At Utah State, he was an honorable mention All-America selection and first-team All-WAC as a senior when he rushed for 1,512 yards.
Williams will wear jersey #33.
Arizona is without running back Stepfan Taylor, leaving only three healthy running backs on the roster -- Andre Ellington, Marion Grice and Robert Hughes. Grice is unproven still and Hughes isn't much help in the running game.
Gaston, since being signed by Arizona, had not gotten any playing time. It is highly possible he is added to the practice squad later.