The team confirmed an earlier report that it has signed free agent running back Foswhitt Whittaker and defensive tackle Ricky Lumpkin to the practice squad.
In a corresponding move, the team released tight end Steve Skelton from the practice squad.
Lumpkin played last Sunday against the Detroit Lions and recorded one tackle. He had previously spent the last two seasons on Arizona's practice squad after originally joining the Cardinals as an undrafted free agent from Kentucky in 2011.
Whitakker is a rookie out of Texas who was not drafted after suffering a knee injury his senior season. He played in 38 career games for the Longhorns and tallied 1,233 yards and 12 touchdowns. He was named first-team All-Big 12 in 2011 as a kick returner.
Skelton joined the Cardinals as an undrafted free agent following the 2011 NFL Draft. He is the brother of Cardinals quarterback John Skelton.