Tempe, AZ (SportsNetwork.com) - The Arizona Cardinals placed safety Tyrann Mathieu and tackle Alameda Ta'amu on the physically unable to perform list on Wednesday.
Mathieu is still recovering from tearing the anterior collateral ligament and lateral collateral ligament in his left knee during a game last December, which caused him to be placed on season-ending injured reserve on two days later.
Speaking shortly after the injuries occurred, Cards head coach Bruce Arians stated that the former LSU star wouldn't likely to be medically cleared for the start of next summer's training camp after undergoing surgery.
He finished his rookie campaign with 68 tackles, two interceptions and one sack over 13 games.
Ta'amu is also coming off an ACL injury suffered late last season.
Arizona also released wide receiver Kelsey Pope.