TEMPE, Ariz. (AP) Safety-cornerback Tyrann Mathieu and cornerback Justin Bethel are among four players placed on the physically unable to perform list by the Arizona Cardinals in advance of the opening of training camp.

The All-Pro Mathieu is returning from surgery to repair a torn ACL and Bethel, in competition for a starting cornerback job, is coming back from surgery to repair a fractured left foot.

Also placed on the PUP list by Arizona were defensive lineman Frostee Rucker (foot) and linebacker Zack Wagenmann (foot).

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Players are to report for the opening of training camp Thursday at the University of Phoenix Stadium in Glendale.

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