The Arizona Cardinals added Christian Tupou, Kevin Cone and Dominque Williams to their practice squad Tuesday.
Tupou, a defensive lineman, spent the preseason with Arizona and was released in the final roster cut.
Cone, a receiver, spent the preseason with the Miami Dolphins after signing with the team on April 3. He played in 16 games with the Atlanta Falcons last season, and had one catch for 12 yards. He originally entered the league as an undrafted rookie free agent out of Georgia Tech in 2011.
Williams, a running back, comes over from the Minnesota Vikings. He was signed by the team as a rookie free agent out of Wagner in May after rushing for 4,435 yards in his collegiate career.