The Seahawks have done the expected to get a backup tight end on the active roster for tomorrow's game at St. Louis: they have placed rookie defensive end Cassius Marsh on the season-ending injured-reserve list and signed tight end RaShaun Allen from the practice squad.
Seattle needing Allen is a sign that Luke Willson, questionable for the Rams game because of a groin injury, won't be able to play and Cooper Helfet will be making his first career start.
The Seahawks also signed defensive back Steven Terrell off their practice squad for Sunday's game for the second consecutive week. Terrell, who was waived and re-signed onto the practice squad this week, takes the roster place opened by the trade of Percy Harvin to the New York Jets that became official this morning.
Harvin now gone and Willson likely being inactive makes it more likely rookie wide receivers Kevin Norwood and Paul Richardson will both be active against the Rams, and have a role for the first time this season. (OK, Richardson has been targeted by Russell Wilson for a pass once in five games, hardly a role).
Boarding a flight to St. Louis now. The Seahawks have been there since last night.