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The Cardinals front seven keeps taking hits.

Defensive end Calais Campbell will be out of the lineup for a week or more after suffering a knee injury when he was blocked by Broncos tight end Julius Thomas on a play that Cardinals coach Bruce Arians decried as the dirtiest he’s ever seen. There’s no such drama associated with linebacker Matt Shaughnessy’s injury, but the Cardinals will be missing him all the same.

Arians announced Monday that Shaughnessy is headed to injured reserve with the designation to return after he hurt his knee against Denver. Shaughnessy will be out of the lineup for the next two months. Having Campbell, Shaughnessy, Darnell Dockett and John Abraham all out of the lineup at the same time is going to stretch the Cardinals thin on defense, so it’s good that they don’t anticipate being without cornerback Patrick Peterson as well.

Arians said, via the team’s website, that Peterson should be OK after injuring his ankle on Sunday.