Seattle Seahawks center Max Unger and defensive end Red Bryant did not participate in practice Wednesday as each went through the mandated concussion protocol after being injured last week against Tampa Bay.
Seattle coach Pete Carroll said it was too early to determine the status of either player for Sunday's game at Atlanta. Unger has already missed two games earlier this season with an arm injury.
The return of wide receiver Percy Harvin remains unknown, although Carroll said Wednesday he's confident Harvin will play this season. Harvin must be added to the active roster by next Tuesday or he would have to spend the rest of the season on the physically unable to perform list. Carroll said Harvin went through an extensive workout on Wednesday morning.