Updated Saturday, November 3, 2012 at 09:31 PM
Seattle guard James Carpenter was absent from practice Friday after he came down sick.
Turns out the sickness may have been the result of a concussion, which Carpenter was diagnosed with, which will force him to miss Sunday's game against Minnesota.
The Seahawks on Friday listed Carpenter as questionable for the game, but changed his status Saturday, and now Seattle faces a choice.
Second-year guard John Moffitt is available after recovering from a knee injury that kept him out the past five games. Moffitt could start in Carpenter's place at left guard. More likely, Moffitt will play right guard — the position he has played for all of his 11 career starts as a Seahawk — with Paul McQuistan moving from right guard to the left side where he started the first three games.
Carpenter was the team's first-round pick in 2011. He was drafted to play tackle, but moved to guard this season. He missed training camp recovering from a knee injury, and he was out the first three games before returning in Week 4. He started the past five games.
Carpenter's absence may disrupt the continuity of a line that had started the same configuration for five consecutive weeks, and last week in Detroit held the opponent without a sack for the first time this season.