The Seahawks on Tuesday promoted center Joey Hunt from the practice squad, giving them 53 players on their active roster.
Seattle had an opening after placing linebacker Josh Forrest on Injured Reserve on Saturday and playing the Eagles with just 52 players.
Seattle also signed receiver Cyril Grayson, offensive lineman Isaiah Battle and defensive tackle Garrison Smith to the practice squad.
All have been with the Seahawks at some point this season and their signings put the practice squad back to the maximum 10.
Grayson was signed as a free agent last spring after running track at LSU and then was with Seattle through training camp.