In a surprise move, the Steelers waived Kirkland just before the 2001 season due to salary cap pressure. That year many star players were waived due to the salary cap including John Randle, Troy Aikman, and Jerry Rice. Kirkland went to the Seattle Seahawks where he became a leader on the defense and had over 100 tackles. The next year, he played his final season for the Eagles, becoming the veteran leader of a defense that ranked seventh in the league and advanced to the NFC Championship game before losing to the Buccaneers.
