Butler (ankle) did not participate at Wednesday's practice and is considered doubtful for Sunday's contest against the Rams, Mike Jurecki of Fox Sports 910 reports.
Butler was seen in a walking boot at Wednesday's practice, and while he may hold snaps for Chandler Catanzaro on Sunday, the chances of him punting against the Rams seem slim. If Butler sits, the Cardinals will need to look elsewhere to delegate punting responsibilities.