Four Cardinals will open training camp later this week on the physically unable to perform list.
There are no surprises among the four: safety Tyrann Mathieu, defensive tackle Frostee Rucker, cornerback Justin Bethel and outside linebacker Zack Wagenmann.
Mathieu underwent ACL reconstruction last December. Rucker had foot/ankle surgery this spring and Bethel underwent surgery to repair a broken bone in his foot. Wagenmann suffered a foot injury during off-season practices.
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Mathieu, Rucker and Bethel are starters.