The Carolina Panthers had planned to bolster their defensive line in the draft but ended the weekend with only one new defensive lineman, sixth-round pick Nick Hayden of Wisconsin.

So today they’ve added to their line via free agency, signing veteran defensive tackle Darwin Walker to a one-year contract.

Walker played the 2007 season with the Chicago Bears, starting seven games and recording 17 total tackles. Prior to signing with Chicago he had spent six years with the Eagles, where for a time he was one of the league’s best pass-rushing defensive tackles.

Walker, who grew up in South Carolina, will likely be a backup in Carolina to starters Maake Kemoeatu and Damione Lewis. The Panthers have been looking for help at defensive tackle since trading Kris Jenkins to the Jets.