Arizona has placed 15-year veteran John Abraham on injured reserve, ending his season with the Cardinals.

The 36-year-old outside linebacker sustained a concussion in the season opener against San Diego. He left the team briefly after that, reportedly contemplating retirement, before making an attempt to return this week.

He had not been able to practice, however.

Abraham is the NFL's active career sacks leader with 133 ½, ranking him ninth on the league's all-time list. He had 11 ½ sacks with the Cardinals last season and is in the second year of a two-year contract with Arizona.

The Cardinals also re-signed punter Drew Butler because regular punter Dave Zastudil still is nursing a sore groin.

Butler punted in both of Arizona's games but was cut Tuesday.

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