QB (3) - Matt Hasselbeck, Seneca Wallace, David Greene
RB/FB (6) - Shaun Alexander, Maurice Morris, Mack Strong, Leonard Weaver, Josh Scobey, David Kirtman
WR (6) - Darrell Jackson, Nate Burleson, Bobby Engram, Peter Warrick, DJ Hackett, Maurice Mann
TE (3) - Jerramy Stevens, Itula Mili, Will Heller
OT/OG (7) Walter Jones, Sean Locklear, Floyd Womack, Chris Gray, Tom Ashworth, Ray Willis, Rob Sims
C (2) - Robbie Tobeck, Chris Spencer
DE (4) - Grant Wistrom, Bryce Fisher, Darryl Tapp, Chris Cooper
DT (5) Rocky Bernard, Chuck Darby, Marcus Tubbs, Russell Davis, Craig Terrill
OLB (5) - Julian Peterson, Leroy Hill, D.D. Lewis, Kevin Bentley, Isaiah Kacyvenski
MLB (2) - Lofa Tatupu, Niko Koutouvides
SS/FS (3) - Ken Hamlin, Michael Boulware, Oliver Celestin
CB (5) - Marcus Trufant, Kelly Herndon, Kelly Jennings, Jordan Babineaux, Jimmy Williams
Special Teams (3)
K - Josh Brown
P - Ryan Plackemeier
LS - J.P. Darche
The above roster includes 54 players, so obviously at least one of them will not make the team. It wouldn't be surprising if at least 51 of them make the 53-man roster. The following guys are the least safe: DL Chris Cooper, LB Isaiah Kacyvenski, S Oliver Celestin, CB Jimmy Williams, WR Maurice Mann, FB David Kirtman, KR Josh Scobey.
It would make the most sense if it was one of the offensive players that didn't make the team, which means either David Kirtman or Maurice Mann. Mann is not eligible for the practice squad, so maybe that gives him a leg up. Neither could make the team if the Seahawks feel they need to add a fourth tight end.
DE Kemp Rasmussen and DE Joe Tafoya could also challenge Chris Cooper for his roster spot, or the team could go with only 8 defensive lineman. Etric Pruitt might challenge Oliver Celestin for a spot as well. However, neither of those guys would likely get picked up by someone else, at least not both of them.
The Seahawks always have the option of going with only 7 DBs and bringing back either Celestin or Pruitt from the practice squad later in the season if someone in the secondary gets injured. Shaunard Harts might also be available if the team gets in trouble down the line. The final safety position could also be filled by a veteran if a decent one gets cut from another team.