The Seahawks placed WR Ben Obomanu on injured reserve with a wrist injury and promoted WR Jermaine Kearse.
Seattle also released CB Danny Gorrer and promoted OT Mike Person.
Obomanu had four catches for 58 yards this season in eight games and one carry for 11 yards. He had 37 catches for 436 yards and two touchdowns last season.
Kearse is a rookie out of Washington. Person is a second-year pro who was with the Colts earlier this season.